转载：ACM题目难度分级列表

#	ID	Title	Solved by	Difficulty
1	100	The 3n + 1 problem	26485	1
2	102	Ecological Bin Packing	10608	2
3	10071	Back to High School Physics	9554	3
4	10055	Hashmat the Brave Warrior	9432	3
5	272	TEX Quotes	8192	3
6	458	The Decoder	7289	4
7	136	Ugly Numbers	6729	4
8	10038	Jolly Jumpers	6319	4
9	10035	Primary Arithmetic	6268	4
10	10018	Reverse and Add	6061	4
11	108	Maximum Sum	6022	4
12	113	Power of Cryptography	5804	5
13	494	Kindergarten Counting Game	5784	5
14	299	Train Swapping	5752	5
15	10082	WERTYU	5481	5
16	101	The Blocks Problem	5225	5
17	591	Box of Bricks	5113	5
18	10008	What's Cryptanalysis?	4942	5
19	10300	Ecological Premium	4839	5
20	575	Skew Binary	4732	6
21	369	Combinations	4543	6
22	151	Power Crisis	4470	6
23	382	Perfection	4393	6
24	10370	Above Average	4377	6
25	160	Factors and Factorials	4314	6
26	10189	Minesweeper	4303	6
27	579	ClockHands	4293	6
28	264	Count on Cantor	4237	6
29	424	Integer Inquiry	4214	6
30	499	What's The Frequency, Kenneth?	4194	6
31	10110	Light, More Light	4189	6
32	541	Error Correction	4096	6
33	543	Goldbach's Conjecture	4021	7
34	10004	Bicoloring	3939	7
35	10107	What is the Median?	3891	7
36	374	Big Mod	3876	7
37	686	Goldbach's Conjecture (II)	3852	7
38	105	The Skyline Problem	3839	7
39	495	Fibonacci Freeze	3827	7
40	483	Word Scramble	3793	7
41	10041	Vito's Family	3785	7
42	10019	Funny Encryption Method	3773	7
43	256	Quirksome Squares	3713	7
44	138	Street Numbers	3661	7
45	10079	Pizza Cutting	3627	7
46	530	Binomial Showdown	3609	7
47	10696	f91	3552	7
48	111	History Grading	3533	7
49	10340	All in All	3501	8
50	10783	Odd Sum	3500	8
51	476	Points in Figures: Rectangles	3481	8
52	344	Roman Digititis	3443	8
53	673	Parentheses Balance	3436	8
54	10346	Peter's Smoke	3367	8
55	120	Stacks of Flapjacks	3359	8
56	10469	To Carry or not to Carry	3338	8
57	10127	Ones	3329	8
58	492	Pig-Latin	3265	8
59	438	The Circumference of the Circle	3252	8
60	10327	Flip Sort	3214	8
61	401	Palindromes	3212	8
62	10050	Hartals	3211	8
63	103	Stacking Boxes	3207	8
64	324	Factorial Frequencies	3191	8
65	146	ID Codes	3138	8
66	350	Pseudo-Random Numbers	3115	9
67	10106	Product	3083	9
68	10222	Decode the Mad man	3037	9
69	10006	Carmichael Numbers	3036	9
70	568	Just the Facts	3033	9
71	440	Eeny Meeny Moo	3023	9
72	305	Joseph	2986	9
73	10405	Longest Common Subsequence	2954	9
74	583	Prime Factors	2952	9
75	484	The Department of Redundancy Department	2947	9
76	10302	Summation of Polynomials	2934	9
77	477	Points in Figures: Rectangles and Circles	2933	9
78	412	Pi	2898	9
79	446	Kibbles ``n'' Bits ``n'' Bits ``n'' Bits	2890	9
80	406	Prime Cuts	2885	9
81	10260	Soundex	2848	9
82	640	Self Numbers	2846	9
83	572	Oil Deposits	2835	9
84	294	Divisors	2832	9
85	118	Mutant Flatworld Explorers	2816	9
86	107	The Cat in the Hat	2791	9
87	445	Marvelous Mazes	2775	10
88	112	Tree Summing	2755	10
89	694	The Collatz Sequence	2741	10
90	706	LCD Display	2736	10
91	10013	Super long sums	2702	10
92	439	Knight Moves	2699	10
93	443	Humble Numbers	2680	10
94	674	Coin Change	2644	10
95	10812	Beat the Spread!	2596	10
96	371	Ackermann Functions	2573	10
97	834	Continued Fractions	2565	10
98	119	Greedy Gift Givers	2552	10
99	10220	I Love Big Numbers !	2532	10
100	386	Perfect Cubes	2529	10
101	167	The Sultan's Successors	2484	11
102	444	Encoder and Decoder	2477	11
103	713	Adding Reversed Numbers	2471	11
104	195	Anagram	2464	11
105	392	Polynomial Showdown	2458	11
106	10424	Love Calculator	2453	11
107	190	Circle Through Three Points	2430	11
108	291	The House Of Santa Claus	2425	11
109	10161	Ant on a Chessboard	2410	11
110	489	Hangman Judge	2373	11
111	128	Software CRC	2359	11
112	133	The Dole Queue	2334	11
113	490	Rotating Sentences	2323	11
114	10003	Cutting Sticks	2312	11
115	573	The Snail	2277	12
116	10098	Generating Fast, Sorted Permutation	2266	12
117	488	Triangle Wave	2252	12
118	408	Uniform Generator	2243	12
119	10324	Zeros and Ones	2225	12
120	10235	Simply Emirp	2220	12
121	441	Lotto	2200	12
122	106	Fermat vs. Pythagoras	2196	12
123	414	Machined Surfaces	2181	12
124	623	500!	2174	12
125	10323	Factorial! You Must be Kidding!!!	2141	12
126	576	Haiku Review	2138	12
127	200	Rare Order	2119	12
128	10209	Is This Integration ?	2118	13
129	10252	Common Permutation	2114	13
130	10432	Polygon Inside A Circle	2108	13
131	10062	Tell me the frequencies!	2101	13
132	116	Unidirectional TSP	2076	13
133	536	Tree Recovery	2046	13
134	10473	Simple Base Conversion	2034	13
135	10131	Is Bigger Smarter?	2017	13
136	847	A Multiplication Game	2012	13
137	10699	Count the factors	2010	13
138	104	Arbitrage	2005	13
139	10924	Prime Words	2004	13
140	417	Word Index	1992	13
141	156	Ananagrams	1986	13
142	496	Simply Subsets	1982	13
143	10409	Die Game	1982	13
144	478	Points in Figures: Rectangles, Circles, Triangles	1973	13
145	10530	Guessing Game	1966	13
146	10929	You can say 11	1963	13
147	621	Secret Research	1960	14
148	10195	The Knights Of The Round Table	1960	14
149	10338	Mischievous Children	1954	14
150	10066	The Twin Towers	1935	14
151	130	Roman Roulette	1933	14
152	352	The Seasonal War	1929	14
153	10921	Find the Telephone	1921	14
154	400	Unix ls	1914	14
155	10579	Fibonacci Numbers	1849	14
156	10192	Vacation	1843	14
157	10515	Powers Et Al.	1829	14
158	117	The Postal Worker Rings Once	1827	14
159	10000	Longest Paths	1822	15
160	147	Dollars	1805	15
161	846	Steps	1804	15
162	10550	Combination Lock	1803	15
163	155	All Squares	1797	15
164	191	Intersection	1796	15
165	10104	Euclid Problem	1796	15
166	10499	The Land of Justice	1762	15
167	10591	Happy Number	1744	15
168	10137	The Trip	1733	15
169	122	Trees on the level	1729	15
170	121	Pipe Fitters	1714	15
171	10310	Dog and Gopher	1714	15
172	10193	All You Need Is Love	1691	16
173	10305	Ordering Tasks	1689	16
174	10034	Freckles	1679	16
175	357	Let Me Count The Ways	1653	16
176	389	Basically Speaking	1652	16
177	10334	Ray Through Glasses	1637	16
178	10931	Parity	1634	16
179	10010	Where's Waldorf?	1615	16
180	271	Simply Syntax	1604	17
181	10099	The Tourist Guide	1604	17
182	300	Maya Calendar	1601	17
183	10450	World Cup Noise	1591	17
184	532	Dungeon Master	1590	17
185	562	Dividing coins	1585	17
186	514	Rails	1571	17
187	498	Polly the Polynomial	1569	17
188	612	DNA Sorting	1561	17
189	10105	Polynomial Coefficients	1560	17
190	534	Frogger	1555	17
191	10282	Babelfish	1555	17
192	594	One Little, Two Little, Three Little Endians	1549	17
193	348	Optimal Array Multiplication Sequence	1546	17
194	442	Matrix Chain Multiplication	1539	17
195	336	A Node Too Far	1532	17
196	10015	Joseph's Cousin	1521	17
197	10789	Prime Frequency	1507	18
198	10033	Interpreter	1505	18
199	10168	Summation of Four Primes	1499	18
200	340	Master-Mind Hints	1496	18
201	144	Student Grants	1482	18
202	10042	Smith Numbers	1477	18
203	154	Recycling	1460	18
204	10533	Digit Primes	1456	18
205	10420	List of Conquests	1455	18
206	109	SCUD Busters	1446	18
207	740	Baudot Data Communication Code	1431	19
208	10361	Automatic Poetry	1418	19
209	10394	Twin Primes	1417	19
210	216	Getting in Line	1413	19
211	544	Heavy Cargo	1406	19
212	10183	How Many Fibs?	1396	19
213	378	Intersecting Lines	1395	19
214	10286	Trouble with a Pentagon	1393	19
215	624	CD	1383	19
216	10074	Take the Land	1382	19
217	11000	Bee	1381	19
218	661	Blowing Fuses	1374	19
219	10922	2 the 9s	1374	19
220	10116	Robot Motion	1371	19
221	10608	Friends	1369	19
222	278	Chess	1367	19
223	10295	Hay Points	1365	19
224	10336	Rank the Languages	1359	19
225	537	Artificial Intelligence?	1353	20
226	10221	Satellites	1351	20
227	642	Word Amalgamation	1349	20
228	10191	Longest Nap	1339	20
229	11172	Relational Operator	1334	20
230	10276	Hanoi Tower Troubles Again!	1323	20
231	587	There's treasure everywhere!	1321	20
232	10970	Big Chocolate	1320	20
233	524	Prime Ring Problem	1316	20
234	10219	Find the ways !	1316	20
235	343	What Base Is This?	1311	20
236	516	Prime Land	1311	20
237	10152	ShellSort	1300	20
238	315	Network	1294	20
239	574	Sum It Up	1292	20
240	567	Risk	1289	21
241	474	Heads / Tails Probability	1287	21
242	355	The Bases Are Loaded	1285	21
243	10049	Self-describing Sequence	1273	21
244	10070	Leap Year or Not Leap Year and ...	1272	21
245	10182	Bee Maja	1267	21
246	10223	How many nodes ?	1262	21
247	636	Squares (III)	1250	21
248	202	Repeating Decimals	1247	21
249	10130	SuperSale	1245	21
250	10196	Check The Check	1243	21
251	10190	Divide, But Not Quite Conquer!	1241	21
252	10198	Counting	1241	21
253	123	Searching Quickly	1239	21
254	729	The Hamming Distance Problem	1207	22
255	10297	Beavergnaw	1206	22
256	10700	Camel trading	1195	22
257	320	Border	1189	22
258	465	Overflow	1187	22
259	497	Strategic Defense Initiative	1187	22
260	153	Permalex	1186	22
261	739	Soundex Indexing	1181	22
262	637	Booklet Printing	1177	23
263	10067	Playing with Wheels	1177	23
264	124	Following Orders	1169	23
265	409	Excuses, Excuses!	1169	23
266	423	MPI Maelstrom	1163	23
267	422	Word-Search Wonder	1156	23
268	459	Graph Connectivity	1153	23
269	486	English-Number Translator	1149	23
270	10026	Shoemaker's Problem	1146	23
271	10611	The Playboy Chimp	1140	23
272	253	Cube painting	1139	23
273	10474	Where is the Marble?	1135	23
274	10701	Pre, in and post	1132	23
275	10048	Audiophobia	1128	23
276	482	Permutation Arrays	1127	24
277	555	Bridge Hands	1121	24
278	10509	R U Kidding Mr. Feynman!	1120	24
279	10077	The Stern-Brocot Number System	1118	24
280	311	Packets	1113	24
281	10784	Diagonal	1113	24
282	10258	Contest Scoreboard	1111	24
283	485	Pascal's Triangle of Death	1109	24
284	748	Exponentiation	1105	24
285	413	Up and Down Sequences	1103	24
286	531	Compromise	1102	24
287	558	Wormholes	1102	24
288	10573	Geometry Paradox	1102	24
289	10945	Mother bear	1102	24
290	145	Gondwanaland Telecom	1094	24
291	10407	Simple division	1094	24
292	10170	The Hotel with Infinite Rooms	1086	24
293	114	Simulation Wizardry	1080	25
294	10025	The ? 1 ? 2 ? ... ? n = k problem	1078	25
295	10242	Fourth Point !!	1078	25
296	201	Squares	1077	25
297	10465	Homer Simpson	1076	25
298	297	Quadtrees	1073	25
299	326	Extrapolation Using a Difference Table	1073	25
300	10102	The path in the colored field	1071	25
301	170	Clock Patience	1063	25
302	10179	Irreducable Basic Fractions	1062	25
303	10162	Last Digit	1061	25
304	161	Traffic Lights	1058	25
305	140	Bandwidth	1053	25
306	10036	Divisibility	1052	25
307	10487	Closest Sums	1049	25
308	356	Square Pegs And Round Holes	1045	25
309	231	Testing the CATCHER	1037	26
310	10622	Perfect P-th Powers	1034	26
311	10678	The Grazing Cow	1028	26
312	784	Maze Exploration	1027	26
313	10009	All Roads Lead Where?	1023	26
314	10285	Longest Run on a Snowboard	1015	26
315	10056	What is the Probability ?	1010	26
316	10139	Factovisors	1010	26
317	10347	Medians	1009	26
318	10489	Boxes of Chocolates	1009	26
319	639	Don't Get Rooked	1007	26
320	615	Is It A Tree?	1006	26
321	836	Largest Submatrix	1006	26
322	10642	Can You Solve It?	1003	26
323	539	The Settlers of Catan	1001	26
324	701	The Archeologists' Dilemma	1001	26
325	10684	The jackpot	1001	26
326	10451	Ancient Village Sports	994	27
327	115	Climbing Trees	993	27
328	10703	Free spots	993	27
329	10427	Naughty Sleepy Boys	984	27
330	10633	Rare Easy Problem	981	27
331	325	Identifying Legal Pascal Real Constants	977	27
332	166	Making Change	973	27
333	455	Periodic Strings	973	27
334	152	Tree's a Crowd	971	27
335	275	Expanding Fractions	970	27
336	507	Jill Rides Again	968	27
337	10408	Farey sequences	967	27
338	10502	Counting Rectangles	967	27
339	10014	Simple calculations	964	27
340	384	Slurpys	962	28
341	10093	An Easy Problem!	961	28
342	125	Numbering Paths	958	28
343	141	The Spot Game	958	28
344	10125	Sumsets	958	28
345	10229	Modular Fibonacci	957	28
346	437	The Tower of Babylon	953	28
347	333	Recognizing Good ISBNs	952	28
348	10878	Decode the tape	949	28
349	10815	Andy's First Dictionary	944	28
350	10188	Automated Judge Script	940	28
351	10267	Graphical Editor	940	28
352	608	Counterfeit Dollar	934	28
353	110	Meta-Loopless Sorts	928	29
354	193	Graph Coloring	924	29
355	10299	Relatives	919	29
356	628	Passwords	916	29
357	10491	Cows and Cars	916	29
358	10365	Blocks	914	29
359	10080	Gopher II	913	29
360	580	Critical Mass	910	29
361	337	Interpreting Control Sequences	907	29
362	10020	Minimal coverage	902	29
363	164	String Computer	900	29
364	10714	Ants	900	29
365	377	Cowculations	899	29
366	10583	Ubiquitous Religions	899	29
367	700	Date Bugs	898	29
368	10176	Ocean Deep ! - Make it shallow !!	896	30
369	450	Little Black Book	890	30
370	436	Arbitrage (II)	885	30
371	10490	Mr. Azad and his Son!!!!!	884	30
372	10281	Average Speed	882	30
373	280	Vertex	879	30
374	10007	Count the Trees	877	30
375	10140	Prime Distance	873	30
376	725	Division	871	30
377	793	Network Connections	871	30
378	10298	Power Strings	869	30
379	10452	Marcus, help!	866	31
380	10404	Bachet's Game	861	31
381	10100	Longest Match	859	31
382	11185	Ternary	859	31
383	619	Numerically Speaking	854	31
384	10205	Stack 'em Up	853	31
385	644	Immediate Decodability	849	31
386	10508	Word Morphing	849	31
387	542	France '98	848	31
388	10673	Play with Floor and Ceil	848	31
389	127	``Accordian'' Patience	844	31
390	571	Jugs	844	31
391	332	Rational Numbers from Repeating Fractions	841	31
392	10359	Tiling	839	32
393	10078	The Art Gallery	838	32
394	10539	Almost Prime Numbers	832	32
395	696	How Many Knights	831	32
396	10002	Center of Masses	830	32
397	10948	The primary problem	830	32
398	263	Number Chains	824	32
399	353	Pesky Palindromes	821	32
400	712	S-Trees	819	32
401	10656	Maximum Sum (II)	812	33
402	10400	Game Show Math	810	33
403	466	Mirror, Mirror	807	33
404	10115	Automatic Editing	805	33
405	727	Equation	803	33
406	129	Krypton Factor	799	33
407	448	OOPS!	797	33
408	10664	Luggage	796	33
409	232	Crossword Answers	794	33
410	131	The Psychic Poker Player	793	33
411	10129	Play on Words	784	34
412	10194	Football (aka Soccer)	784	34
413	10081	Tight Words	783	34
414	10142	Australian Voting	780	34
415	10363	Tic Tac Toe	780	34
416	10303	How Many Trees?	774	34
417	10397	Connect the Campus	773	34
418	10935	Throwing cards away I	773	34
419	895	Word Problem	772	34
420	10293	Word Length and Frequency	767	35
421	10301	Rings and Glue	764	35
422	679	Dropping Balls	762	35
423	641	Do the Untwist	760	35
424	620	Cellular Structure	755	35
425	10311	Goldbach and Euler	755	35
426	383	Shipping Routes	751	35
427	10790	How Many Points of Intersection?	751	35
428	10954	Add All	746	36
429	126	The Errant Physicist	743	36
430	10800	Not That Kind of Graph	743	36
431	260	Il Gioco dell'X	741	36
432	10415	Eb Alto Saxophone Player	740	36
433	227	Puzzle	739	36
434	10443	Rock, Scissors, Paper	739	36
435	755	487--3279	738	36
436	913	Joana and the Odd Numbers	737	36
437	602	What Day Is It?	734	36
438	10940	Throwing cards away II	734	36
439	681	Convex Hull Finding	730	36
440	301	Transportation	729	36
441	306	Cipher	725	37
442	10112	Myacm Triangles	719	37
443	10341	Solve It	717	37
444	10494	If We Were a Child Again	717	37
445	585	Triangles	716	37
446	750	8 Queens Chess Problem	713	37
447	11044	Searching for Nessy	713	37
448	850	Crypt Kicker II	711	37
449	10315	Poker Hands	705	38
450	10852	Less Prime	705	38
451	10279	Mine Sweeper	704	38
452	394	Mapmaker	702	38
453	10496	Collecting Beepers	700	38
454	10903	Rock-Paper-Scissors Tournament	700	38
455	10283	The Kissing Circles	694	38
456	900	Brick Wall Patterns	691	38
457	460	Overlapping Rectangles	690	38
458	699	The Falling Leaves	687	39
459	402	M*A*S*H	685	39
460	10037	Bridge	684	39
461	10128	Queue	684	39
462	10101	Bangla Numbers	681	39
463	10693	Traffic Volume	679	39
464	825	Walking on the Safe Side	677	39
465	10057	A mid-summer night's dream.	675	39
466	10063	Knuth's Permutation	672	39
467	11059	Maximum Product	672	39
468	10069	Distinct Subsequences	670	40
469	213	Message Decoding	669	40
470	481	What Goes Up	666	40
471	785	Grid Colouring	665	40
472	10344	23 out of 5	664	40
473	10377	Maze Traversal	659	40
474	10551	Basic Remains	658	40
475	11192	Group Reverse	655	40
476	10245	The Closest Pair Problem	654	40
477	10706	Number Sequence	654	40
478	762	We Ship Cheap	651	41
479	10141	Request for Proposal	650	41
480	10600	ACM Contest and Blackout	647	41
481	159	Word Crosses	643	41
482	10810	Ultra-QuickSort	642	41
483	187	Transaction Processing	640	41
484	397	Equation Elation	640	41
485	808	Bee Breeding	640	41
486	861	Little Bishops	640	41
487	188	Perfect Hash	639	41
488	331	Mapping the Swaps	639	41
489	821	Page Hopping	635	42
490	10392	Factoring Large Numbers	633	42
491	469	Wetlands of Florida	632	42
492	839	Not so Mobile	631	42
493	820	Internet Bandwidth	630	42
494	11057	Exact Sum	629	42
495	10054	The Necklace	625	42
496	884	Factorial Factors	618	43
497	10375	Choose and divide	618	43
498	10976	Fractions Again?!	615	43
499	10523	Very Easy !!!	613	43
500	10589	Area	612	43
501	218	Moth Eradication	611	43
502	10519	!! Really Strange !!	608	44
503	10368	Euclid's Game	604	44
504	10918	Tri Tiling	602	44
505	10919	Prerequisites?	601	44
506	134	Loglan-A Logical Language	597	44
507	142	Mouse Clicks	596	44
508	391	Mark-up	594	45
509	10719	Quotient Polynomial	594	45
510	10177	(2/3/4)-D Sqr/Rects/Cubes/Boxes?	593	45
511	10730	Antiarithmetic?	592	45
512	254	Towers of Hanoi	587	45
513	10534	Wavio Sequence	585	45
514	148	Anagram checker	584	45
515	651	Deck	584	45
516	626	Ecosystem	583	45
517	10683	The decadary watch	582	46
518	435	Block Voting	581	46
519	10943	How do you add?	581	46
520	11121	Base -2	581	46
521	630	Anagrams (II)	580	46
522	634	Polygon	579	46
523	10500	Robot maps	579	46
524	737	Gleaming the Cubes	577	46
525	10360	Rat Attack	576	46
526	10287	Gifts in a Hexagonal Box	575	46
527	711	Dividing up	573	46
528	183	Bit Maps	571	46
529	362	18,000 Seconds Remaining	570	46
530	10051	Tower of Cubes	570	46
531	132	Bumpy Objects	569	47
532	10165	Stone Game	568	47
533	10213	How Many Pieces of Land ?	564	47
534	10369	Arctic Network	564	47
535	10916	Factstone Benchmark	564	47
536	10905	Children's Game	562	47
537	416	LED Test	561	47
538	10012	How Big Is It?	561	47
539	10879	Code Refactoring	560	47
540	540	Team Queue	559	47
541	10566	Crossed Ladders	558	47
542	10702	Travelling Salesman	556	48
543	880	Cantor Fractions	554	48
544	429	Word Transformation	553	48
545	10596	Morning Walk	551	48
546	10249	The Grand Dinner	550	48
547	10422	Knights in FEN	550	48
548	535	Globetrotter	548	48
549	10001	Garden of Eden	547	48
550	10326	The Polynomial Equation	547	48
551	703	Triple Ties: The Organizer's Nightmare	546	49
552	184	Laser Lines	544	49
553	10493	Cats, with or without Hats	544	49
554	10393	The One-Handed Typist	542	49
555	11005	Cheapest Base	539	49
556	379	Hi-Q	538	49
557	617	Nonstop Travel	537	49
558	714	Copying Books	536	49
559	10065	Useless Tile Packers	536	49
560	11063	B2-Sequence	536	49
561	10016	Flip-Flop the Squarelotron	534	50
562	10651	Pebble Solitaire	534	50
563	10803	Thunder Mountain	534	50
564	10364	Square	532	50
565	11069	A Graph Problem	532	50
566	601	The PATH	530	50
567	10813	Traditional BINGO	530	50
568	434	Matty's Blocks	529	50
569	10680	LCM	527	50
570	10930	A-Sequence	527	50
571	10653	Bombs! NO they are Mines!!	526	50
572	10210	Romeo and Juliet !	525	50
573	10926	How Many Dependencies?	525	50
574	11040	Add bricks in the wall	525	50
575	10199	Tourist Guide	523	51
576	10908	Largest Square	523	51
577	550	Multiplying by Rotation	521	51
578	590	Always on the run	516	51
579	208	Firetruck	515	51
580	10374	Election	514	52
581	10667	Largest Block	514	52
582	10200	Prime Time	513	52
583	10330	Power Transmission	512	52
584	10518	How Many Calls?	511	52
585	10147	Highways	510	52
586	273	Jack Straws	508	52
587	347	Run, Run, Runaround Numbers	508	52
588	10910	Marks Distribution	508	52
589	10061	How many zero's and how many digits ?	506	52
590	10088	Trees on My Island	506	52
591	855	Lunch in Grid City	505	52
592	10849	Move the bishop	505	52
593	10507	Waking up brain	502	53
594	10946	You want what filled?	502	53
595	165	Stamps	501	53
596	454	Anagrams	501	53
597	10306	e-Coins	501	53
598	327	Evaluating Simple C Expressions	499	53
599	10171	Meeting Prof. Miguel...	498	53
600	10791	Minimum Sum LCM	497	53
601	10044	Erdos Numbers	496	53
602	10763	Foreign Exchange	495	54
603	688	Mobile Phone Coverage	494	54
604	10739	String to Palindrome	493	54
605	10880	Colin and Ryan	490	54
606	10780	Again Prime? No Time.	489	54
607	10371	Time Zones	488	54
608	843	Crypt Kicker	485	55
609	10620	A Flea on a Chessboard	485	55
610	318	Domino Effect	483	55
611	471	Magic Numbers	482	55
612	10602	Editor Nottobad	481	55
613	11074	Draw Grid	481	55
614	11015	05-2 Rendezvous	479	55
615	186	Trip Routing	478	55
616	10391	Compound Words	477	56
617	10484	Divisibility of Factors	477	56
618	381	Making the Grade	476	56
619	677	All Walks of length ``n'' from the first node	476	56
620	10446	The Marriage Interview :-)	476	56
621	10773	Back to Intermediate Math	476	56
622	255	Correct Move	475	56
623	10527	Persistent Numbers	475	56
624	10202	Pairsumonious Numbers	474	56
625	10497	Sweet Child Makes Trouble	474	56
626	457	Linear Cellular Automata	473	56
627	556	Amazing	473	56
628	741	Burrows Wheeler Decoder	472	56
629	796	Critical Links	472	56
630	10304	Optimal Binary Search Tree	471	56
631	743	The MTM Machine	470	56
632	10689	Yet another Number Sequence	469	56
633	526	String Distance and Transform Process	467	57
634	10268	498-bis	467	57
635	10271	Chopsticks	467	57
636	162	Beggar My Neighbour	465	57
637	10126	Zipf's Law	465	57
638	627	The Net	464	57
639	584	Bowling	462	57
640	10705	The Fun Number System	462	57
641	10522	Height to Area	460	58
642	11001	Necklace	460	58
643	11150	Cola	459	58
644	10738	Riemann vs Mertens	458	58
645	705	Slash Maze	457	58
646	10820	Send a Table	457	58
647	622	Grammar Evaluation	456	58
648	10928	My Dear Neighbours	456	58
649	245	Uncompress	454	58
650	314	Robot	454	58
651	10005	Packing polygons	454	58
652	10617	Again Palindrome	451	59
653	638	Finding Rectangles	450	59
654	704	Colour Hash	450	59
655	10060	A hole to catch a man	450	59
656	10669	Three powers	450	59
657	10920	Spiral Tap	449	59
658	143	Orchard Trees	448	59
659	538	Balancing Bank Accounts	446	59
660	10132	File Fragmentation	444	60
661	10650	Determinate Prime	444	60
662	517	Word	442	60
663	551	Nesting a Bunch of Brackets	442	60
664	588	Video Surveillance	440	60
665	10307	Killing Aliens in Borg Maze	440	60
666	10309	Turn the Lights Off	439	60
667	586	Instant Complexity	438	60
668	10801	Lift Hopping	438	60
669	10090	Marbles	437	61
670	10354	Avoiding Your Boss	436	61
671	10925	Krakovia	436	61
672	168	Theseus and the Minotaur	435	61
673	209	Triangular Vertices	435	61
674	468	Key to Success	434	61
675	547	DDF	433	61
676	10022	Delta-wave	432	61
677	10721	Bar Codes	432	61
678	10337	Flight Planner	431	61
679	10460	Find the Permuted String	431	61
680	10865	Brownie Points	431	61
681	196	Spreadsheet	428	62
682	10233	Dermuba Triangle	428	62
683	10226	Hardwood Species	427	62
684	10871	Primed Subsequence	426	62
685	11039	Building designing	425	62
686	222	Budget Travel	424	62
687	10197	Learning Portuguese	422	63
688	290	Palindroms <---> smordnilaP	420	63
689	10120	Gift?!	420	63
690	756	Biorhythms	419	63
691	654	Ratio	418	63
692	833	Water Falls	418	63
693	10178	Count the Faces.	417	64
694	10503	The dominoes solitaire	417	64
695	11137	Ingenuous Cubrency	417	64
696	10541	Stripe	415	64
697	10154	Weights and Measures	414	64
698	418	Molecules	413	64
699	632	Compression (II)	413	64
700	10227	Forests	412	64
701	647	Chutes and Ladders	411	64
702	462	Bridge Hand Evaluator	410	65
703	296	Safebreaker	409	65
704	380	Call Forwarding	409	65
705	11219	How old are you?	409	65
706	501	Black Box	408	65
707	598	Bundling Newspapers	408	65
708	10896	Known Plaintext Attack	407	65
709	270	Lining Up	403	66
710	10201	Adventures in Moving - Part IV	403	66
711	10308	Roads in the North	403	66
712	10290	{Sum+=i++} to Reach N	402	66
713	10356	Rough Roads	402	66
714	321	The New Villa	401	66
715	10774	Repeated Josephus	400	66
716	10994	Simple Addition	399	66
717	177	Paper Folding	397	67
718	403	Postscript	397	67
719	10554	Calories from Fat	395	67
720	10092	The Problem with the Problem Setter	393	67
721	10325	The Lottery	393	67
722	616	Coconuts, Revisited	392	68
723	763	Fibinary Numbers	390	68
724	393	The Doors	389	68
725	10677	Base Equality	389	68
726	10776	Determine The Combination	389	68
727	815	Flooded!	388	68
728	220	Othello	387	68
729	11152	Colourful Flowers	387	68
730	10254	The Priest Mathematician	386	69
731	157	Route Finding	385	69
732	10284	Chessboard in FEN	385	69
733	10892	LCM Cardinality	384	69
734	139	Telephone Tangles	382	69
735	10453	Make Palindrome	382	69
736	10646	What is the Card?	382	69
737	10717	Mint	382	69
738	10585	Center of symmetry	381	70
739	10440	Ferry Loading II	376	70
740	11078	Open Credit System	374	71
741	10113	Exchange Rates	373	71
742	10312	Expression Bracketing	373	71
743	172	Calculator Language	372	71
744	11089	Fi-binary Number	370	72
745	10029	Edit Step Ladders	369	72
746	10543	Traveling Politician	369	72
747	10610	Gopher and Hawks	369	72
748	313	Intervals	367	72
749	897	Anagrammatic Primes	365	73
750	670	The dog task	364	73
751	10959	The Party, Part I	363	73
752	665	False coin	362	73
753	10625	GNU = GNU'sNotUnix	362	73
754	11105	Semi-prime H-numbers	362	73
755	702	The Vindictive Coach	361	73
756	10150	Doublets	359	74
757	10856	Recover Factorial	359	74
758	10387	Billiard	358	74
759	341	Non-Stop Travel	357	74
760	10603	Fill	357	74
761	10963	The Swallowing Ground	357	74
762	812	Trade on Verweggistan	356	74
763	10851	2D Hieroglyphs decoder	356	74
764	10894	Save Hridoy	355	75
765	10174	Couple-Bachelor-Spinster Numbers.	354	75
766	10313	Pay the Price	354	75
767	11115	Uncle Jack	354	75
768	137	Polygons	353	75
769	345	It's Ir-Resist-Able!	353	75
770	10181	15-Puzzle Problem	353	75
771	10806	Dijkstra, Dijkstra.	353	75
772	11220	Decoding the message.	353	75
773	11068	An Easy Task	352	75
774	181	Hearts	351	75
775	10718	Bit Mask	351	75
776	657	The die is cast	350	76
777	10401	Injured Queen Problem	350	76
778	11076	Add Again	350	76
779	11067	Little Red Riding Hood	348	76
780	10891	Game of Sum	347	76
781	614	Mapping the Route	345	77
782	10637	Coprimes	345	77
783	10679	I Love Strings!!	345	77
784	11173	Grey Codes	345	77
785	493	Rational Spiral	342	77
786	10986	Sending email	342	77
787	10912	Simple Minded Hashing	341	78
788	11056	Formula 1	341	78
789	545	Heads	339	78
790	10212	The Last Non-zero Digit.	339	78
791	10672	Marbles on a tree	339	78
792	10895	Matrix Transpose	339	78
793	548	Tree	338	78
794	871	Counting Cells in a Blob	338	78
795	11085	Back to the 8-Queens	337	79
796	427	FlatLand Piano Movers	336	79
797	710	The Game	336	79
798	11003	Boxes	336	79
799	388	Galactic Import	335	79
800	339	SameGame Simulation	334	79
801	10586	Polynomial Remains	332	80
802	10947	Bear with me, again..	332	80
803	11151	Longest Palindrome	331	80
804	11054	Wine trading in Gergovia	330	80
805	10616	Divisible Group Sums	328	81
806	349	Transferable Voting (II)	327	81
807	10382	Watering Grass	327	81
808	10576	Y2K Accounting Bug	327	81
809	10742	The New Rule in Euphomia	327	81
810	10047	The Monocycle	326	81
811	10482	The Candyman Can	326	81
812	776	Monkeys in a Regular Forest	325	81
813	10520	Determine it	325	81
814	10578	The Game of 31	325	81
815	668	Parliament	324	82
816	589	Pushing Boxes	323	82
817	732	Anagrams by Stack	323	82
818	10075	Airlines	323	82
819	150	Double Time	322	82
820	135	No Rectangles	320	83
821	10528	Major Scales	320	83
822	10830	A New Function	320	83
823	447	Population Explosion	319	83
824	565	Pizza Anyone?	318	83
825	11064	Number Theory	318	83
826	10670	Work Reduction	317	84
827	10978	Let's Play Magic!	317	84
828	557	Burger	316	84
829	10259	Hippity Hopscotch	316	84
830	10406	Cutting tabletops	316	84
831	10842	Traffic Flow	316	84
832	179	Code Breaking	315	84
833	865	Substitution Cypher	314	84
834	11042	Complex, difficult and complicated	314	84
835	11244	Counting Stars	313	85
836	10911	Forming Quiz Teams	311	85
837	11012	Cosmic Cabbages	311	85
838	302	John's trip	310	85
839	892	Finding words	310	85
840	10532	Combination! Once Again	310	85
841	10536	Game of Euler	310	85
842	10662	The Wedding	310	85
843	10720	Graph Construction	310	85
844	467	Synching Signals	309	86
845	10635	Prince and Princess	309	86
846	10296	Jogging Trails	308	86
847	10991	Region	307	86
848	520	Append	306	87
849	10574	Counting Rectangles	305	87
850	11233	Deli Deli	305	87
851	533	Equation Solver	304	87
852	10058	Jimmi's Riddles	304	87
853	10264	The Most Potent Corner	304	87
854	10333	The Tower of ASCII	304	87
855	10821	Constructing BST	304	87
856	10017	The Never Ending Towers of Hanoi	303	87
857	10261	Ferry Loading	302	88
858	11062	Andy's Second Dictionary	301	88
859	11207	The easiest way	301	88
860	633	A Chess Knight	300	88
861	10250	The Other Two Trees	300	88
862	10681	Teobaldo's Trip	300	88
863	993	Product of digits	299	89
864	10097	The Color Game	299	89
865	10862	Connect the Cable Wires	299	89
866	11045	My T-shirt suits me	298	89
867	10094	Place the Guards	297	89
868	11223	O: dah dah dah!	297	89
869	338	Long Multiplication	296	89
870	521	Gossiping	296	89
871	10167	Birthday Cake	296	89
872	10217	A Dinner with Schwarzenegger!!!	296	89
873	10555	Dead Fraction	296	89
874	10351	Cutting Diamonds	295	90
875	10083	Division	294	90
876	10203	Snow Clearing	294	90
877	171	Car Trialling	292	91
878	10957	So Doku Checker	292	91
879	276	Egyptian Multiplication	289	92
880	10771	Barbarian tribes	289	92
881	242	Stamps and Envelope Size	288	92
882	10164	Number Game	288	92
883	10785	The Mad Numerologist	288	92
884	11222	Only I did it!	288	92
885	10410	Tree Reconstruction	287	92
886	10466	How Far?	287	92
887	346	Getting Chorded	286	93
888	529	Addition Chains	286	93
889	10685	Nature	285	93
890	11086	Composite Prime	285	93
891	185	Roman Numerals	284	93
892	753	A Plug for UNIX	284	93
893	824	Coast Tracker	284	93
894	10158	War	284	93
895	10564	Paths through the Hourglass	283	94
896	10480	Sabotage	282	94
897	428	Swamp County Roofs	280	95
898	662	Fast Food	280	95
899	718	Skyscraper Floors	280	95
900	385	DNA Translation	279	95
901	523	Minimum Transport Cost	279	95
902	10232	Bit-wise Sequence	279	95
903	518	Time	278	95
904	10146	Dictionary	278	95
905	735	Dart-a-Mania	277	96
906	10557	XYZZY	277	96
907	10562	Undraw the Trees	277	96
908	10759	Dice Throwing	276	96
909	410	Station Balance	275	96
910	10187	From Dusk Till Dawn	275	96
911	11058	Encoding	275	96
912	10043	Chainsaw Massacre	274	97
913	10263	Railway	274	97
914	11093	Just Finish it up	274	97
915	452	Project Scheduling	273	97
916	10257	Dick and Jane	273	97
917	10634	Say NO to Memorization	273	97
918	10716	Evil Straw Warts Live	273	97
919	375	Inscribed Circles and Isosceles Triangles	272	97
920	10787	Modular Equations	272	97
921	10792	The Laurel-Hardy Story	272	97
922	10823	Of Circles and Squares	272	97
923	10510	Cactus	271	98
924	10328	Coin Toss	270	98
925	603	Parking Lot	269	98
926	10964	Strange Planet	269	98
927	308	Tin Cutter	268	99
928	604	The Boggle Game	267	99
929	10668	Expanding Rods	267	99
930	178	Shuffling Patience	266	100
931	433	Bank (Not Quite O.C.R.)	266	100
932	10419	Sum-up the Primes	266	100
933	10666	The Eurocup is Here!	266	100
934	10733	The Colored Cubes	266	100
935	10396	Vampire Numbers	265	100
936	10855	Rotated square	265	100
937	211	The Domino Effect	264	100
938	613	Numbers That Count	264	100
939	10495	Conic Distance	264	100
940	10626	Buying Coke	264	100
941	10902	Pick-up Sticks	264	100
942	11110	Equidivisions	264	100
943	198	Peter's Calculator	263	101
944	10917	Walk Through the Forest	263	101
945	592	Island of Logic	262	101
946	10814	Simplifying Fractions	262	101
947	837	Light and Transparencies	261	101
948	10111	Find the Winning Move	261	101
949	10428	The Roots	261	101
950	11029	Leading and Trailing	261	101
951	11221	Magic square palindromes.	261	101
952	10039	Railroads	259	102
953	158	Calendar	258	103
954	852	Deciding victory in Go	258	103
955	10505	Montesco vs Capuleto	258	103
956	10350	Liftless EME	257	103
957	10567	Helping Fill Bates	257	103
958	10816	Travel in Desert	257	103
959	10827	Maximum sum on a torus	257	103
960	10318	Security Panel	256	103
961	11100	The Trip, 2007	256	103
962	599	The Forrest for the Trees	255	104
963	10439	Temple of Dune	254	104
964	230	Borrowers	253	105
965	10804	Gopher Strategy	253	105
966	10898	Combo Deal	253	105
967	395	Board Silly	252	105
968	671	Spell checker	252	105
969	11038	How Many O's?	252	105
970	11055	Homogeneous squares	252	105
971	745	Numeric Puzzles Again!	251	106
972	10874	Segments	251	106
973	948	Fibonaccimal Base	250	106
974	10278	Fire Station	248	107
975	10843	Anne's game	248	107
976	174	Strategy	246	108
977	257	Palinwords	246	108
978	561	Jackpot	246	108
979	845	Gas Station Numbers	245	108
980	10316	Airline Hub	245	108
981	10506	The Ouroboros problem	245	108
982	487	Boggle Blitz	244	109
983	10040	Ouroboros Snake	244	109
984	303	Pipe	243	109
985	307	Sticks	243	109
986	10246	Asterix and Obelix	243	109
987	974	Kaprekar Numbers	242	109
988	10688	The Poor Giant	242	109
989	563	Crimewave	241	110
990	10560	Minimum Weight	241	110
991	11026	A Grouping Problem	241	110
992	759	The Return of the Roman Empire	240	110
993	10504	Hidden squares	240	110
994	11133	Eigensequence	240	110
995	10980	Lowest Price in Town	238	111
996	405	Message Routing	237	112
997	10317	Equating Equations	237	112
998	10357	Playball !!!	237	112
999	10547	Hidden Truth in Recurrence	237	112
1000	707	Robbery	236	112
1001	10218	Let's Dance !!!	235	113
1002	10416	Folding My T-Shirt	235	113
1003	11060	Beverages	235	113
1004	215	Spreadsheet Calculator	234	113
1005	505	Moscow time	234	113
1006	869	Airline Comparison	234	113
1007	10215	The Largest/Smallest Box ...	234	113
1008	192	Synchronous Design	233	114
1009	519	Puzzle (II)	233	114
1010	10944	Nuts for nuts..	232	114
1011	11002	Towards Zero	232	114
1012	10793	The Orc Attack	231	115
1013	10942	Can of Beans	231	115
1014	10086	Test the Rods	230	115
1015	10722	Super Lucky Numbers	230	115
1016	10745	Dominant Strings	230	115
1017	10483	The Sum Equals the Product	229	116
1018	10901	Ferry Loading III	229	116
1019	652	Eight	228	116
1020	10023	Square root	228	116
1021	10339	Watching Watches	228	116
1022	10389	Subway	228	116
1023	10421	Critical Wave	228	116
1024	10900	So you want to be a 2n-aire?	228	116
1025	10915	War on Weather	228	116
1026	11103	WFF 'N PROOF	228	116
1027	425	Enigmatic Encryption	227	117
1028	10349	Antenna Placement	227	117
1029	10593	Kites	227	117
1030	10425	Mobile Destroyer	226	117
1031	10819	Trouble of 13-Dots	226	117
1032	787	Maximum Sub-sequence Product	225	118
1033	10180	Rope Crisis in Ropeland!	225	118
1034	10288	Coupons	225	118
1035	10655	Contemplation - Algebra	225	118
1036	274	Cat and Mouse	224	118
1037	10243	Fire! Fire!! Fire!!!	224	118
1038	618	Doing Windows	222	119
1039	11049	Basic wall maze	222	119
1040	11108	Tautology	222	119
1041	298	Race Tracks	220	120
1042	10977	Enchanted Forest	220	120
1043	902	Password Search	219	121
1044	10537	The Toll! Revisited	219	121
1045	10710	Chinese Shuffle	219	121
1046	11022	String Factoring	219	121
1047	268	Double Trouble	218	121
1048	672	Gangsters	218	121
1049	10085	The most distant state	218	121
1050	11203	Can you decide it for ME?	218	121
1051	10021	Cube in the labirint	217	122
1052	10390	Bean Counting	217	122
1053	10535	Shooter	217	122
1054	658	It's not a Bug, it's a Feature!	216	123
1055	726	Decode	216	123
1056	10329	Combinatorial Expression	216	123
1057	10462	Is There A Second Way Left?	216	123
1058	10549	Russian Dolls	216	123
1059	10423	Peter Takes a Tramway	215	123
1060	10477	The Hybrid Knight	215	123
1061	415	Sunrise	214	124
1062	432	Modern Art	214	124
1063	10149	Yahtzee	214	124
1064	10320	Cow Trouble! Help Please!!	214	124
1065	182	Bonus Bonds	213	124
1066	10433	Automorphic Numbers	213	124
1067	10449	Traffic	213	124
1068	10459	The Tree Root	213	124
1069	10570	Meeting with Aliens	213	124
1070	10598	Find the Latitude	213	124
1071	10777	God! Save me	213	124
1072	10854	Number of Paths	213	124
1073	11034	Ferry Loading IV	213	124
1074	10024	Curling up the cube	212	125
1075	10471	Can't be too GREEDY	212	125
1076	10990	Another New Function	212	125
1077	914	Jumping Champion	211	126
1078	10540	Flowers of a Beautiful Mind	211	126
1079	11048	Automatic Correction of Misspellings	211	126
1080	387	A Puzzling Problem	210	126
1081	10118	Free Candies	210	126
1082	10378	Complex Numbers	210	126
1083	11231	Black and white painting	210	126
1084	451	Poker Solitaire Evaluator	209	127
1085	10385	Duathlon	209	127
1086	10746	Crime Wave - The Sequel	209	127
1087	10577	Bounding box	208	127
1088	10897	Travelling Distance	208	127
1089	858	Berry Picking	207	128
1090	312	Crosswords (II)	206	129
1091	10277	Boastin' Red Socks	206	129
1092	10445	Make Polygon	206	129
1093	570	Stats	205	129
1094	810	A Dicey Problem	205	129
1095	10342	Always Late	205	129
1096	10517	Wind of Change!	205	129
1097	10769	Pillars	205	129
1098	10958	How Many Solutions?	205	129
1099	11226	Reaching the fix-point.	205	129
1100	10386	Circles in Triangle	204	130
1101	11070	The Good Old Times	204	130
1102	10134	AutoFish	203	130
1103	10157	Expressions	203	130
1104	10475	Help the Leaders	203	130
1105	10545	Maximal Quadrilateral	203	130
1106	656	Optimal Programs	202	131
1107	10436	Cheapest way	201	132
1108	10609	Fractal	201	132
1109	10761	Broken Keyboard	201	132
1110	464	Sentence/Phrase Generator	200	132
1111	10660	Citizen attention offices	200	132
1112	10690	Expression Again	200	132
1113	11004	Changing Roadmap	200	132
1114	10343	Base64 Decoding	199	133
1115	10488	Swimming Gopher	199	133
1116	10938	Flea circus	199	133
1117	11088	End up with More Teams	199	133
1118	719	Glass Beads	198	134
1119	10464	Big Big Real Numbers	198	134
1120	760	DNA Sequencing	197	134
1121	10114	Loansome Car Buyer	197	134
1122	11130	Billiard bounces	197	134
1123	358	Don't Have A Cow, Dude	196	135
1124	607	Scheduling Lectures	196	135
1125	10269	Adventure of Super Mario	196	135
1126	10604	Chemical Reaction	196	135
1127	10734	Triangle Partitioning	196	135
1128	10927	Bright Lights	196	135
1129	10214	Trees in a Wood.	195	136
1130	10444	Multi-peg Towers of Hanoi	195	136
1131	10698	Football Sort	195	136
1132	10858	Unique Factorization	195	136
1133	10247	Complete Tree Labeling	194	137
1134	10933	Volleyball	194	137
1135	10998	Flipping Colors	194	137
1136	10068	The Treasure Hunt	193	137
1137	10348	Submarines	193	137
1138	10913	Walking on a Grid	193	137
1139	11094	Continents	193	137
1140	11155	Be Efficient	193	137
1141	10173	Smallest Bounding Rectangle	192	138
1142	10556	Biometrics	192	138
1143	309	FORCAL	191	139
1144	10160	Servicing Stations	191	139
1145	10992	The Ghost of Programmers	191	139
1146	10175	Sphere	190	139
1147	10934	Dropping water balloons	190	139
1148	247	Calling Circles	189	140
1149	10138	CDVII	189	140
1150	10426	Knights' Nightmare	189	140
1151	10544	Numbering the Paths	189	140
1152	10860	Many a Little makes a Mickle	189	140
1153	10872	Triangles	189	140
1154	11080	Place the Guards	189	140
1155	149	Forests	188	141
1156	782	Contour Painting	188	141
1157	411	Centipede Collisions	187	142
1158	721	Invitation Cards	187	142
1159	10512	A Day in Math-land	187	142
1160	10587	Mayor's posters	187	142
1161	10624	Super Number	187	142
1162	11099	Next Same-Factored	187	142
1163	10032	Tug of War	186	142
1164	10144	Expression	186	142
1165	10529	Dumb Bones	186	142
1166	10999	Crabbles	186	142
1167	11111	Generalized Matrioshkas	186	142
1168	685	Least Path Cost	185	143
1169	11204	Musical instruments	185	143
1170	559	Squares (II)	184	144
1171	653	Gizilch	184	144
1172	967	Circular	184	144
1173	10802	Lex Smallest Drive	184	144
1174	10136	Chocolate Chip Cookies	183	145
1175	10331	The Flyover Construction	183	145
1176	10461	Difference	182	146
1177	10027	Language Cardinality	181	146
1178	10687	Monitoring the Amazon	180	147
1179	10728	Help!	180	147
1180	866	Intersecting Line Segments	179	148
1181	10236	The Fibonacci Primes	179	148
1182	10516	Another Counting Problem	179	148
1183	593	MBone	178	149
1184	659	Reflections	178	149
1185	10169	Urn-ball Probabilities !	178	149
1186	10238	Throw the Dice	178	149
1187	10275	Guess the Number!	178	149
1188	10563	Least Squares	178	149
1189	10479	The Hendrie Sequence	177	150
1190	10569	Number Theory	177	150
1191	10889	The Lost Gift	177	150
1192	11077	Find the Permutations	177	150
1193	180	Eeny Meeny	176	150
1194	552	Filling the Gaps	176	150
1195	10831	Gerg's Cake	176	150
1196	625	Compression	175	151
1197	10352	Count the eWords	175	151
1198	10514	River Crossing	175	151
1199	194	Triangle	174	152
1200	335	Processing MX Records	174	152
1201	893	Y3K Problem	174	152
1202	10750	Beautiful Points	174	152
1203	10914	Abundance and Perfect Numbers	174	152
1204	366	Cutting Up	173	153
1205	610	Street Directions	173	153
1206	10366	Faucet Flow	173	153
1207	10072	Bob Laptop Woolmer and Eddie Desktop Barlow	172	154
1208	10239	The Book-shelver's Problem	172	154
1209	11132	Dice from pennies	172	154
1210	991	Safe Salutations	171	155
1211	10442	Basic	171	155
1212	11087	Divisibility Testing	171	155
1213	10228	Star not a Tree?	170	156
1214	259	Software Allocation	169	157
1215	10237	Bishops	169	157
1216	10553	Treasure Map	169	157
1217	10950	Bad Code	169	157
1218	811	The Fortified Forest	168	158
1219	10883	Supermean	168	158
1220	684	Integral Determinant	167	159
1221	10649	Danger Point	167	159
1222	10709	Intersection is Not that Easy	167	159
1223	11230	Annoying painting tool	167	159
1224	11241	Humidex	167	159
1225	10868	Bungee Jumping	166	160
1226	10882	Koerner's Pub	166	160
1227	11028	Sum of Product	166	160
1228	635	Clock solitaire	165	161
1229	10731	Test	165	161
1230	11053	Flavius Josephus Reloaded	165	161
1231	11218	KTV	165	161
1232	11236	Grocery store	165	161
1233	173	Network Wars	164	161
1234	10454	Trexpression	164	161
1235	10575	Polylops	164	161
1236	10932	Calculator	164	161
1237	10123	No Tipping	163	162
1238	10441	Catenyms	163	162
1239	10581	Partitioning for fun and profit	163	162
1240	10744	The Optimal Super-Highway	163	162
1241	328	The Finite State Text Processing Machine	162	163
1242	10559	Blocks	162	163
1243	11202	The least possible effort	162	163
1244	11240	Antimonotonicity	162	163
1245	399	Another Puzzling Problem	161	165
1246	10875	Big Math	161	165
1247	407	Gears on a Board	160	166
1248	10658	ReArrange	160	166
1249	10848	Make Palindrome Checker	160	166
1250	334	Identifying Concurrent Events	159	167
1251	10367	Equations	159	167
1252	10694	Combinatorial Summation	159	167
1253	169	Xenosemantics	158	168
1254	10648	Chocolate Box	157	169
1255	10713	Map	157	169
1256	10877	Diceoids	157	169
1257	11254	Consecutive Integers	157	169
1258	10291	Cut the Legs	155	171
1259	10355	Superman	155	171
1260	10542	Hyper-drive	155	171
1261	10870	Recurrences	155	171
1262	10987	Antifloyd	155	171
1263	10091	The Valentine's Day	154	172
1264	10225	Discrete Logging	154	172
1265	10582	ASCII Labyrinth	154	172
1266	10850	The Gossipy Gossipers Gossip Gossips	154	172
1267	10937	Blackbeard the Pirate	154	172
1268	500	Table	153	173
1269	10592	Freedom Fighter	153	173
1270	11008	Antimatter Ray Clearcutting	153	173
1271	11024	Circular Lock	153	173
1272	11148	Moliu Fractions	153	173
1273	11161	Help My Brother (II)	153	173
1274	430	Swamp County Supervisors	152	174
1275	10045	Echo	152	174
1276	10256	The Great Divide	152	174
1277	11101	Mall Mania	152	174
1278	221	Urban Elevations	151	175
1279	10973	Triangle Counting	151	175
1280	11051	Dihedral groups	151	175
1281	11158	Elegant Permuted Sum	151	175
1282	11232	Cylinder	151	175
1283	856	The Vigenère Cipher	150	177
1284	10230	Savage Garden	150	177
1285	10244	First Love !!!	150	177
1286	10413	Crazy Savages	150	177
1287	10606	Opening Doors	150	177
1288	11032	Function Overloading	150	177
1289	11170	Cos(NA)	150	177
1290	645	File Mapping	149	178
1291	10234	Frequent Substrings	149	178
1292	11138	Nuts and Bolts	149	178
1293	11140	Little Ali's Little Brother!	149	178
1294	175	Keywords	148	179
1295	10741	Magic Cube	148	179
1296	10822	Planet of the Rock, Paper and Scissors	148	179
1297	680	Movement of Reading Head	147	180
1298	10373	The Brick Stops Here	147	180
1299	10740	Not the Best	147	180
1300	10982	Troublemakers	147	180
1301	11239	Open Source	147	180
1302	419	Matching Meetings	146	181
1303	11027	Palindromic Permutation	146	181
1304	390	Letter Sequence Analysis	145	183
1305	10659	Fitting Text into Slides	145	183
1306	10707	2D-Nim	145	183
1307	10832	Yoyodyne	145	183
1308	11246	K-Multiple Free set	145	183
1309	163	City Directions	144	184
1310	757	Gone Fishing	144	184
1311	10890	Maze	144	184
1312	11227	The silver bullet.	144	184
1313	11242	Tour de France	144	184
1314	426	Fifth Bank of Swamp County	143	185
1315	716	Commedia dell' arte	143	185
1316	11136	Hoax or what	143	185
1317	11147	KuPellaKeS BST	143	185
1318	924	Spreading The News	142	187
1319	10124	Subway	142	187
1320	10909	Lucky Number	142	187
1321	669	Defragment	141	188
1322	736	Lost in Space	141	188
1323	10294	Arif in Dhaka (First Love Part 2)	141	188
1324	10412	Big Big Trees	141	188
1325	860	Entropy Text Analyzer	140	189
1326	10011	Where Can You Hide?	140	189
1327	10398	The Golden Pentagon	140	189
1328	11112	Babylonian Roulette	140	189
1329	189	Pascal Program Lengths	139	191
1330	361	Cops and Robbers	139	191
1331	453	Intersecting Circles	139	191
1332	10148	Advertisement	139	191
1333	10468	Rigid Circle Packing	139	191
1334	10807	Prim, Prim.	139	191
1335	663	Sorting Slides	138	192
1336	10590	Boxes of Chocolates Again	138	192
1337	11225	Tarot scores.	138	192
1338	560	Magic	137	193
1339	10723	Cyborg Genes	137	193
1340	10732	The Strange Research	137	193
1341	11072	Points	137	193
1342	176	City Navigation	136	195
1343	250	Pattern Matching Prelims	136	195
1344	10084	Hotter Colder	136	195
1345	10372	Leaps Tall Buildings (in a single bound)	136	195
1346	10430	Dear GOD, Pardon Me	136	195
1347	10457	Magic Car	136	195
1348	10511	Councilling	136	195
1349	10619	Advanced Causal Measurements	136	195
1350	11096	Nails	136	195
1351	10251	Min-Max Cake	135	196
1352	10486	Mountain Village	135	196
1353	10548	Find the Right Changes	135	196
1354	10552	Genealogical Research	135	196
1355	11181	Probability|Given	134	198
1356	708	Dreisam Equations	133	199
1357	10319	Manhattan	133	199
1358	10525	New to Bangladesh?	133	199
1359	10724	Road Construction	133	199
1360	10888	Warehouse	133	199
1361	10273	Eat or Not to Eat?	132	201
1362	10571	Products	132	201
1363	11021	Tribles	132	201
1364	11127	Triple-Free Binary Strings	132	201
1365	566	Adam's Genes	131	202
1366	828	Deciphering Messages	131	202
1367	10417	Gift Exchanging	131	202
1368	10644	Floor Tiles	131	202
1369	11083	Zeroes Revisited	131	202
1370	11180	Base i-1	131	202
1371	449	Majoring in Scales	130	204
1372	515	King	130	204
1373	872	Ordering	130	204
1374	10697	Firemen barracks	130	204
1375	11237	Halloween treats	130	204
1376	795	Sandorf's Cipher	129	205
1377	10076	The Bumpy Robot	129	205
1378	10388	Snap	129	205
1379	10643	Facing Problem With Trees	129	205
1380	10989	Bomb, Divide and Conquer	129	205
1381	10156	Sala-ma-Sond, A Nice Little Pond	128	207
1382	697	Jack and Jill	127	209
1383	758	The Same Game	127	209
1384	10652	Board Wrapping	127	209
1385	10715	Cat	127	209
1386	11247	Income Tax	127	209
1387	239	Tempus et mobilius. Time and motion	126	210
1388	554	Caesar Cypher	126	210
1389	10568	n Group k	126	210
1390	10725	Triangular Square	126	210
1391	11129	An antiarithmetic permutation	126	210
1392	11149	Power of Matrix	126	210
1393	835	Square of Primes	125	212
1394	844	Pousse	125	212
1395	10594	Data Flow	125	212
1396	10747	Maximum Subsequence	125	212
1397	10825	Anagram and Multiplication	125	212
1398	10923	Seven Seas	125	212
1399	240	Variable Radix Huffman Encoding	124	214
1400	962	Taxicab Numbers	124	214
1401	10089	Repackaging	124	214
1402	11047	The Scrooge Co Problem	124	214
1403	926	Walking Around Wisely	123	215
1404	11258	String Partition	123	215
1405	258	Mirror Maze	122	217
1406	10476	Spam or Not Spam	122	217
1407	10599	Robots(II)	122	217
1408	11234	Expressions	122	217
1409	553	Simply proportion	121	219
1410	775	Hamiltonian Cycle	121	219
1411	10601	Cubes	121	219
1412	10817	Headmaster's Headache	121	219
1413	11125	Arrange Some Marbles	121	219
1414	11205	The broken pedometer	121	219
1415	751	Triangle War	120	221
1416	10654	The Uxuhul Voting System	120	221
1417	10145	Lock Manager	119	223
1418	10207	The Unreal Tournament	119	223
1419	10663	Non-Powerful Subsets	119	223
1420	10692	Huge Mods	119	223
1421	10748	Knights Roaming	119	223
1422	695	Placing the Ops	118	224
1423	10799	OOPS! They did it Again...	118	224
1424	10887	Concatenation of Languages	118	224
1425	11106	Rectilinear Polygon	118	224
1426	319	Pendulum	117	226
1427	491	Tile Topology	117	226
1428	10186	Euro Cup 2000	117	226
1429	10345	Cricket/Football Goes Down	117	226
1430	10735	Euler Circuit	117	226
1431	660	Going in circles on Alpha Centauri	116	228
1432	10163	Storage Keepers	116	228
1433	10248	The Integer All-time Champ	116	228
1434	10561	Treblecross	116	228
1435	10621	Jack and Jill	116	228
1436	10665	Diatribe against Pigeonholes	116	228
1437	10764	Signed-digit numbers	116	228
1438	10844	Bloques	116	228
1439	11235	Frequent values	116	228
1440	10253	Series-Parallel Networks	115	230
1441	10262	Suffidromes	115	230
1442	10615	Rooks	115	230
1443	10708	Cheetah	115	230
1444	373	Romulan Spelling	114	232
1445	709	Formatting Text	114	232
1446	734	The Programmer's Hex	114	232
1447	765	References	114	232
1448	10028	Demerit Points	114	232
1449	10172	The Lonesome Cargo Distributor	114	232
1450	11092	IIUC HexWorld	114	232
1451	10623	Thinking Backward	113	234
1452	11134	Fabled Rooks	113	234
1453	323	Jury Compromise	112	236
1454	648	Stamps (II)	112	236
1455	830	Shark	112	236
1456	10208	Liar or Not Liar that is the...	112	236
1457	10726	Coco Monkey	112	236
1458	11036	Eventually Periodic Sequence	112	236
1459	577	WIMP	111	239
1460	851	Maze	111	239
1461	10255	The knight's Tour	111	239
1462	10292	The Gossiping System	111	239
1463	10788	Parenthesizing Palindromes	111	239
1464	11011	Numerical Methods! A Satire	111	239
1465	698	Index	110	241
1466	882	The Mailbox Manufacturers Problem	110	241
1467	989	Su Doku	110	241
1468	10053	Envelopes	110	241
1469	10117	Nice Milk	110	241
1470	10953	Stochastic Digit Generator	110	241
1471	11159	Factors and Multiples	110	241
1472	512	Spreadsheet Tracking	109	243
1473	629	Test	109	243
1474	10381	The Rock	109	243
1475	11122	Tri Tri	109	243
1476	527	The partition of a cake	108	245
1477	903	Spiral of Numbers	108	245
1478	10280	Old Wine Into New Bottles	108	245
1479	10384	The Wall Pushers	108	245
1480	10546	The Eagle's Nest	108	245
1481	10765	Doves and bombs	108	245
1482	10782	Send More Money	108	245
1483	754	Treasure Hunt	107	248
1484	911	Multinomial Coefficients	107	248
1485	10558	A Brief Gerrymander	107	248
1486	10595	Knight on the Bee Board	106	250
1487	10906	Strange Integration	106	250
1488	10993	Ignoring Digits	106	250
1489	907	Winterim Backpacking Trip	105	252
1490	10321	Polygon Intersection	105	252
1491	10463	Aztec Knights	105	252
1492	10686	SQF Problems	105	252
1493	10772	Rose windows	105	252
1494	11157	Dynamic Frog	105	252
1495	420	Supercomputer Selection, The Sequel	104	255
1496	838	Worm World	104	255
1497	10211	Divisibility Testing! Wow!	103	257
1498	261	The Window Property	102	260
1499	600	A Duckpin Tournament	102	260
1500	10448	Unique World	102	260
1501	10818	Dora Trip	102	260
1502	11200	Sapitaur's labyrinth	102	260
1503	664	Single-Player Games	101	262
1504	10866	Magic Bitstrings	101	262
1505	11035	Card Hands	101	262
1506	609	Metal Cutting	100	265
1507	682	Whoever-pick-the-last-one-lose	100	265
1508	766	Sum of powers	100	265
1509	10353	Circles in Hexagon :-)	100	265
1510	10376	Snakes	100	265
1511	10838	The Pawn Chess	100	265
1512	10122	Mysterious Mountain	99	268
1513	10647	Optimal House Placement	99	268
1514	10985	Rings'n'Ropes	99	268
1515	11090	Going in Cycle!!	99	268
1516	199	Partial differential equations	98	270
1517	715	Substitution Cipher	98	270
1518	783	Trains	98	270
1519	10661	The Perspectographer	98	270
1520	10881	Piotr's Ants	98	270
1521	814	The Letter Carrier's Rounds	97	273
1522	11191	Square	97	273
1523	197	Cube	96	276
1524	840	Deadlock Detection	96	276
1525	988	Many Paths, One Destination	96	276
1526	10185	Phylogenetic Trees Inherited	96	276
1527	10751	Chessboard	96	276
1528	10805	Cockroach Escape Networks	96	276
1529	10835	Playing with Coins	96	276
1530	11081	Strings	96	276
1531	790	Head Judge Headache	95	279
1532	10811	Up the Ante	95	279
1533	277	Cabinets	94	282
1534	10087	The Tajmahal of ++Y2k	94	282
1535	10265	Toroidal Chess Queens' Problem	94	282
1536	10794	The Deadly Olympic Returns!!!	94	282
1537	10824	Regular Polygon	94	282
1538	10979	How Many Triangles?	94	282
1539	330	Inventory Maintenance	93	285
1540	503	Parallelepiped walk	93	285
1541	10184	Equidistance	93	285
1542	10434	Working With Specific Gravity	93	285
1543	10968	KuPellaKeS	93	285
1544	11020	Efficient Solutions	93	285
1545	11104	Cousins	93	285
1546	316	Stars	92	288
1547	870	Intersecting Rectangles	92	288
1548	10418	Hyper Toy Soldiers	92	288
1549	10755	Garbage Heap	92	288
1550	10166	Travel	91	291
1551	10839	The Curse of Barbosa	91	291
1552	10956	Prime Suspect	91	291
1553	404	Radar Scopes	90	294
1554	606	Keeps Going and Going and ...	90	294
1555	799	Safari Holiday	90	294
1556	10399	Optimus Prime	90	294
1557	10962	Don Giovanni's Last Dinner	90	294
1558	10997	Medals	90	294
1559	502	DEL command	89	298
1560	676	Horse Step Maze	89	298
1561	752	Unscrambling Images	89	298
1562	817	According to Bartjens	89	298
1563	10362	Trains	89	298
1564	10627	Infinite Race	89	298
1565	10768	Planarity	89	298
1566	11082	Matrix Decompressing	89	298
1567	11228	Transportation system.	89	298
1568	11201	The problem of the crazy linguist	88	301
1569	10743	Blocks on Blocks	87	304
1570	11186	Circum Triangle	87	304
1571	398	18-Wheeler Caravans (aka Semigroups)	86	308
1572	10597	Right Words	86	308
1573	317	Hexagon	85	312
1574	421	Polygonal Puzzle	85	312
1575	848	Fmt	85	312
1576	10607	Siege	85	312
1577	10936	Land surveyor's job	85	312
1578	11131	Close Relatives	85	312
1579	722	Lakes	84	315
1580	738	A Logical Problem	84	315
1581	910	TV game	84	315
1582	10231	Matrix World	84	315
1583	10524	Matrix Reloaded	84	315
1584	10704	Traffic!	84	315
1585	288	Arithmetic Operations With Large Integers	83	319
1586	431	Trial of the Millennium	83	319
1587	689	Napoleon's Grumble	83	319
1588	899	Colour Circles	83	319
1589	927	Integer Sequences from Addition of Terms	83	319
1590	10456	Intelligent Cats	83	319
1591	832	Financial Risk	82	323
1592	10216	The Optimal Coffee Shop!!	82	323
1593	10240	The n-Dimensional Cities	82	323
1594	226	MIDI Preprocessing	81	327
1595	857	Quantiser	81	327
1596	10030	Computer Dialogue	81	327
1597	10379	Pit Stop Strategy	81	327
1598	10614	Dreadful Vectors	81	327
1599	10983	Buy one, get the rest free	81	327
1600	11162	Independent Attacking Zones	81	327
1601	11164	Kingdom Division	81	327
1602	11174	Stand in a Line	81	327
1603	310	L--system	80	331
1604	806	Spatial Structures	80	331
1605	10618	Tango Tango Insurrection	80	331
1606	11195	Another n-Queen Problem	80	331
1607	376	More Triangles ... THE AMBIGUOUS CASE	79	335
1608	929	Number Maze	79	335
1609	10133	Audubon's Stormy Arctic Trip	79	335
1610	10270	Bigger Square Please...	79	335
1611	10437	Playing With Fraction	79	335
1612	10645	Menu	79	335
1613	11031	Looking for a Subset	79	335
1614	11182	Zeroes III	79	335
1615	928	Eternal Truths	78	340
1616	10795	A Different Task	78	340
1617	11013	Get Straight	78	340
1618	11052	Economic phone calls	78	340
1619	246	10-20-30	77	344
1620	595	A Major Problem	76	348
1621	920	Sunny Mountains	76	348
1622	10274	Fans and Gems	76	348
1623	10332	The Absent Minded Professor	76	348
1624	10431	Normal Distribution	76	348
1625	10736	Series of PI	76	348
1626	10775	Mystical Matrix	76	348
1627	10826	Hot or Cold?	76	348
1628	10841	Lift Hopping in the Real World	76	348
1629	11184	Joyful Ride	76	348
1630	10526	Intellectual Property	74	358
1631	10779	Collectors Problem	74	358
1632	11043	Fast and Easy Data Compressor	74	358
1633	11166	Power Signs	74	358
1634	10159	Star	73	363
1635	10754	Fantastic Sequence	73	363
1636	229	Scanner	72	368
1637	267	Of(f) Course!	72	368
1638	692	BUT We Need a Diagram	72	368
1639	10380	Shogi Tournament	72	368
1640	10640	Planes around the World	72	368
1641	10873	Splat, Inc.	72	368
1642	10995	Educational Journey	72	368
1643	11019	Matrix Matcher	72	368
1644	11095	Tabriz City	72	368
1645	816	Abbott's Revenge	71	373
1646	10206	Stars	71	373
1647	10521	Continuously Growing Fractions	71	373
1648	10395	Titans in Danger	70	378
1649	10470	Shifted Coefficient Number System	70	378
1650	10767	Barcelona's trams	70	378
1651	10786	Qualify for the Champions League	70	378
1652	10951	Polynomial GCD	70	378
1653	10984	Double NP-hard	70	378
1654	767	Game	69	384
1655	10729	Treequivalence	69	384
1656	10798	Be wary of Roses	69	384
1657	11084	Anagram Division	69	384
1658	11117	Little Quilt	69	384
1659	286	Dead Or Not -- That Is The Question	68	389
1660	506	System Dependencies	68	389
1661	983	Localized Summing for Blurring	68	389
1662	10876	Factory Robot	68	389
1663	10981	String Morphing	68	389
1664	11160	Going Together	68	389
1665	210	Concurrency Simulator	67	395
1666	283	Compress	67	395
1667	731	Numerical Summation of a Series	67	395
1668	10760	Translation or rotation	67	395
1669	11014	Make a Crystal	67	395
1670	11245	Anti-Arithmetic-Sequence	67	395
1671	11264	Coin Collector	67	395
1672	206	Meals on Wheels Routing System	66	401
1673	10580	Ransom Note	66	401
1674	11010	Tic-Tac-Tough	66	401
1675	11116	Babel Towers	66	401
1676	234	Switching Channels	65	407
1677	578	Polygon Puzzler	65	407
1678	881	Points, Polygons and Containers	65	407
1679	10095	Saving the Planet	65	407
1680	11091	How many Knight Placing?	65	407
1681	238	Jill's Bike	64	414
1682	742	Domino Game	64	414
1683	10204	Adventures in Moving - Part V	64	414
1684	10447	Sum-up the Primes (II)	64	414
1685	10613	Mushroom Misery	64	414
1686	10711	Stitching	64	414
1687	10837	A Research Problem	64	414
1688	10904	Structural Equivalence	64	414
1689	818	Cutting Chains	63	420
1690	10472	Fastest Vs Cheapest	63	420
1691	10682	Forró Party	63	420
1692	11224	Let's swim!	63	420
1693	11249	Game	63	420
1694	10272	DDR King	62	427
1695	10358	Matrix	62	427
1696	10501	Simplified Shisen-Sho	62	427
1697	10565	Matrix	62	427
1698	10632	Pyramid	62	427
1699	11073	Euler's Totient Function	62	427
1700	826	Symbolic Numerical System	61	434
1701	10073	Constrained Exchange Sort	61	434
1702	10403	Escape from Tut's Tomb	61	434
1703	10455	Gray Code	61	434
1704	10899	Billiard again	61	434
1705	11061	Playing War	61	434
1706	365	Welfare Reform	60	441
1707	370	Bingo	60	441
1708	631	Microzoft Calendar	60	441
1709	643	Bulk Mailing	60	441
1710	859	Chinese Checkers	60	441
1711	10458	Cricket Ranking	60	441
1712	10467	Parse Tree	60	441
1713	10513	Bangladesh Sequences	60	441
1714	10612	Paper Folding	60	441
1715	10674	Tangents	60	441
1716	10859	Placing Lampposts	60	441
1717	10886	Standard Deviation	60	441
1718	10907	Art Gallery	60	441
1719	11030	Predator II	60	441
1720	11097	Poor My Problem! :-(	60	441
1721	11238	Innoumerous bowling games	60	441
1722	10109	Solving Systems of Linear Equations	59	449
1723	10322	The Four in One Stadium	59	449
1724	10712	Count the Numbers	59	449
1725	10853	Pablito nailed a nail	59	449
1726	11118	Prisoners, Boxes and Pieces of Paper	59	449
1727	11113	Continuous Fractions	58	457
1728	11168	Airport	58	457
1729	11198	Dancing Digits	58	457
1730	667	Fence	57	465
1731	10588	Queuing at the doctors	57	465
1732	10809	Great Circle	57	465
1733	10941	Words adjustment	57	465
1734	11124	Troubles for Modern Days Problemsetters	57	465
1735	11153	Museums	57	465
1736	868	Numerical Maze	56	473
1737	874	2D Representations	56	473
1738	883	Overlapping Rectangles	56	473
1739	10631	Normals	56	473
1740	10996	Go	56	473
1741	11206	Coloring the map, but not anyhow	56	473
1742	11229	Improved tic-tac-toe.	56	473
1743	10638	The Trip II	55	482
1744	10834	The Story of Two Coins	55	482
1745	10836	The Maximum Term	55	482
1746	11260	Odd Root Sum	55	482
1747	11269	Setting Problems	55	482
1748	10052	Inviting Politicians	54	490
1749	10641	Barisal Stadium	54	490
1750	10727	Practice	54	490
1751	10867	Cutting a Polygon	54	490
1752	10869	Brownie Points II	54	490
1753	10960	The Party, Part II	54	490
1754	10965	Khepel's Problem	54	490
1755	11243	Texas Trip	54	490
1756	342	HTML Syntax Checking	53	500
1757	10411	Another Game of Tetris	53	500
1758	10481	The Gift Wrappers of Hollywood	53	500
1759	11018	Mars Buggy	53	500
1760	11178	Morley's Theorem	53	500
1761	11256	Repetitive Multiple	53	500
1762	564	Gaston	52	509
1763	831	Document Validator	52	509
1764	11071	Permutation Representation	52	509
1765	11123	Counting Trapizoid	52	509
1766	957	Popes	51	519
1767	10885	Martin the Gardener	51	519
1768	10961	Chasing After Don Giovanni	51	519
1769	11261	Bishops	51	519
1770	733	Follow the Folding Dot	50	530
1771	908	Re-connecting Computer Sites	50	530
1772	986	How Many?	50	530
1773	10438	Meta Editor	50	530
1774	11120	Very Funny Mr. Feynman	50	530
1775	10335	Ray Inside a Polygon	49	541
1776	10847	Basic Tautologies	49	541
1777	11016	Square Counting	49	541
1778	11259	Coin Changing Again	49	541
1779	918	ASCII Mandelbrot	48	552
1780	972	Horizon Line	48	552
1781	10224	Return of the Jedi	48	552
1782	10498	Happiness	48	552
1783	11109	Rinse	48	552
1784	11262	Weird Fence	48	552
1785	10766	Organising the Organisation	47	564
1786	10939	Ants, Aphids and a Ladybug	47	564
1787	11165	Galactic Travel	47	564
1788	827	Buddy Memory Allocator	46	576
1789	853	DVD Subtitles	46	576
1790	873	Loan (II)	46	576
1791	960	Gaussian Primes	46	576
1792	10864	The Predator	46	576
1793	11190	Series of Powers	46	576
1794	473	Raucous Rockers	45	589
1795	678	Schedule of Taiwan Baseball League	45	589
1796	898	Hole Cutter	45	589
1797	10266	Surveying	45	589
1798	10289	A Square and Equilateral Triangles	45	589
1799	10797	Peaceful Sharing	45	589
1800	367	Halting Factor Replacement Systems	44	602
1801	611	Parallel Deadlock	44	602
1802	802	Lead or Gold	44	602
1803	10064	Travelling in another Dimension	44	602
1804	10531	Maze Statistics	44	602
1805	11107	Life Forms	44	602
1806	11128	Faulty Computer	44	602
1807	11144	S.O.S.	44	602
1808	581	Word Search Wonder	43	616
1809	842	Crossword Puzzles	43	616
1810	944	Happy Numbers	43	616
1811	10828	Back to Kernighan-Ritchie	43	616
1812	10884	Persephone	43	616
1813	11006	Wheel Good	43	616
1814	11176	Winning Streak	43	616
1815	214	Code Generation	42	631
1816	879	Circuit Nets	42	631
1817	985	Round and Round Maze	42	631
1818	10121	Legendary Pokemon	42	631
1819	10241	Semi-triangular and also Square	42	631
1820	10402	Triangle Covering	42	631
1821	10584	Text Formalization	42	631
1822	11066	Aragorn	42	631
1823	282	Rename	41	646
1824	764	Pentominos	41	646
1825	841	Snake	41	646
1826	10478	The Falling Pillars	41	646
1827	10695	Find the Point	41	646
1828	10752	Distant Jumping	41	646
1829	11017	A Greener World	41	646
1830	11175	From D to E and Back	41	646
1831	11253	Fractal	41	646
1832	10429	Mohr's Circle	40	662
1833	10749	Automobile Travelling	40	662
1834	11126	Relaxed Golf	40	662
1835	11167	Monkeys in the Emei Mountain	40	662
1836	265	Dining Diplomats	39	679
1837	546	Image Recognizer	39	679
1838	976	Bridge Building	39	679
1839	10796	Right Hand Rule	39	679
1840	11156	Continuous Drawing	39	679
1841	237	Monitoring Wheelchair Patients	38	697
1842	683	Character Decoding	38	697
1843	744	Triangular Museum	38	697
1844	822	Queue and A	38	697
1845	946	A Pile of Boxes	38	697
1846	947	Master Mind Helper	38	697
1847	11033	Help my Brother	38	697
1848	269	Counting Patterns	37	716
1849	569	Horse Shoe Scoring	37	716
1850	747	Grid Soccer	37	716
1851	804	Petri Net Simulation	37	716
1852	877	Offset Polygons	37	716
1853	990	Diving for Gold	37	716
1854	997	Show the Sequence	37	716
1855	10676	Grid Points	37	716
1856	10893	Creating Sudoku Puzzles	37	716
1857	10967	The Great Escape	37	716
1858	11065	A Gentlemen's Agreement	37	716
1859	11187	Water Crisis	37	716
1860	243	Theseus and the Minotaur (II)	36	736
1861	284	Logic	36	736
1862	655	Scrabble	36	736
1863	878	Rotating Tetris Pieces	36	736
1864	995	Super Divisible Numbers	36	736
1865	10031	Saskatchewan	36	736
1866	11255	Necklace	36	736
1867	262	Transferable Voting	35	757
1868	10671	Grid Speed	35	757
1869	10758	Journey	35	757
1870	10808	Rational Resistors	35	757
1871	10833	Lunar Forest	35	757
1872	10949	Kids in a Grid	35	757
1873	11183	Teen Girl Squad	35	757
1874	809	Bullet Hole	34	779
1875	819	Gifts Large and Small	34	779
1876	10103	Karpovich blocks	34	779
1877	10108	The Mosquito Killer Mosquitos	34	779
1878	10119	Farewell, my friend	34	779
1879	10975	Dueue's Quiz	34	779
1880	11025	Mr. And Mrs. Hamilton	34	779
1881	11210	Chinese Mahjong	34	779
1882	285	Crosswords	33	803
1883	289	A Very Nasty Text Formatter	33	803
1884	925	No more prerequisites, please!	33	803
1885	10135	Herding Frosh	33	803
1886	10414	Denki Blocks	33	803
1887	11212	Editing a Book	33	803
1888	475	Wild Thing	32	828
1889	549	Evaluating an Equations Board	32	828
1890	728	Scatter Point Plot	32	828
1891	906	Rational Neighbor	32	828
1892	10538	Powerful Magic Squares	32	828
1893	11250	Working with Small Numbers	32	828
1894	266	Stamping Out Stamps	31	854
1895	769	Magic of David Copperfield	31	854
1896	823	Stopper Stumper	31	854
1897	10770	Sokoban	31	854
1898	11007	Mini Cube	31	854
1899	11266	Equations	31	854
1900	329	PostScript Emulation	30	883
1901	904	Overlapping Air Traffic Control Zones	30	883
1902	10675	Revenge of Faucet Flow	30	883
1903	11114	Polygon Encoder	30	883
1904	359	Sex Assignments And Breeding Experiments	29	913
1905	915	Stack of Cylinders	29	913
1906	978	Lemmings Battle!	29	913
1907	10605	Mines For Diamonds	29	913
1908	10737	The Difference Engine	29	913
1909	11102	Moonshine	29	913
1910	11214	Guarding the Chessboard	29	913
1911	11252	Take Me Home (To the Place I Belong)	29	913
1912	11268	Reliable Network	29	913
1913	225	Golygons	28	946
1914	293	Bits	28	946
1915	650	Bowl	28	946
1916	890	Maze (II)	28	946
1917	10628	Quadrills	28	946
1918	10691	Subway	28	946
1919	10972	RevolC FaeLoN	28	946
1920	11037	Point of View in Flatland	28	946
1921	251	Nondeterministic Trellis Automata	27	981
1922	396	Top Dog	27	981
1923	10572	Black & White	27	981
1924	10863	Shovelling Snow	27	981
1925	11050	Construct the wall maze	27	981
1926	205	Getting There	26	1019
1927	244	Train Time	26	1019
1928	504	Random number	26	1019
1929	891	Syntrax	26	1019
1930	10153	New Horizons	26	1019
1931	10829	L-Gap Substrings	26	1019
1932	11171	SMS	26	1019
1933	11177	Fighting Against a Polygonal Monster	26	1019
1934	11267	The Hire-a-Coder Business Model	26	1019
1935	295	Fatman	25	1059
1936	979	The Abominable Triangleman	25	1059
1937	11046	Numbers and operations	25	1059
1938	687	Lattice Practices	24	1104
1939	10485	Painting with CSE	24	1104
1940	11169	Deal or No Deal	24	1104
1941	11179	Bit Stream	24	1104
1942	11196	Birthday Cake	24	1104
1943	746	Polygon Visibility	23	1152
1944	982	Cube	23	1152
1945	10435	Compare Directories	23	1152
1946	10969	Sweet Dream	23	1152
1947	11009	Geometry Once Again	23	1152
1948	11215	How Many Numbers?	23	1152
1949	730	Morse Code Generation	22	1204
1950	970	Particles	22	1204
1951	10756	HardNumbers	22	1204
1952	11209	Be Together Again and Forever	22	1204
1953	11257	New Marketing Plan	22	1204
1954	777	Codebreakers	21	1261
1955	813	Robot	21	1261
1956	912	Live From Mars	21	1261
1957	10988	From G to H and back	21	1261
1958	11146	Insurrection	21	1261
1959	212	Use of Hospital Facilities	20	1324
1960	666	Rating	20	1324
1961	10151	Spaghetti	20	1324
1962	10155	Green Eggs and Ham	20	1324
1963	11075	Collage	20	1324
1964	203	Running Lights Visibility Calculator	19	1394
1965	801	Flight Planning	19	1394
1966	905	Tacos Panchita	19	1394
1967	953	The Incredible Pile Machine	19	1394
1968	980	X-Express	19	1394
1969	11098	Battle II	19	1394
1970	11189	A Simple Pendulum	19	1394
1971	11194	Stone Grid	19	1394
1972	322	Ships	18	1471
1973	797	Two Way Traffic	18	1471
1974	807	Towers of Powers	18	1471
1975	854	Worse Code	18	1471
1976	10143	Loan	18	1471
1977	10314	Three Pigs	18	1471
1978	10753	Exponential Function	18	1471
1979	11135	Gopher that walks and swims	18	1471
1980	11251	Fractions	18	1471
1981	204	Robot Crash	17	1558
1982	249	Bang the Drum Slowly	17	1558
1983	304	Department	17	1558
1984	794	Straightest Paths	17	1558
1985	798	Tile Puzzle	17	1558
1986	829	Almost Balanced Trees	17	1558
1987	862	Origami	17	1558
1988	11023	Multisets and Sequences	17	1558
1989	11119	Chemical Attraction	17	1558
1990	11193	Infinix	17	1558
1991	207	PGA Tour Prize Money	16	1655
1992	605	The Rotating Disk	16	1655
1993	646	The Gourmet Club	16	1655
1994	723	Comment Removal	16	1655
1995	886	Named Extension Dialing	16	1655
1996	887	Revolutionary Calendar	16	1655
1997	889	Islands	16	1655
1998	10096	The Richest Man of the Universe	16	1655
1999	10762	Treasure Castle	16	1655
2000	10846	Reading time from a clock	16	1655
2001	10952	Pattern Transformations	16	1655
2002	11041	Quarter-Finals with Brazil!? No!!!	16	1655
2003	11079	What's the Time?	16	1655
2004	11142	MineSweeper II	16	1655
2005	11163	Jaguar King	16	1655
2006	223	Classifying Lots in a Subdivision	15	1766
2007	292	Presentation Error	15	1766
2008	864	Scheme Pretty-Printing	15	1766
2009	909	The BitPack Data Compression Problem	15	1766
2010	921	A Word Puzzle in the Sunny Mountains	15	1766
2011	922	Rectangle by the Ocean	15	1766
2012	10046	Fold-up Patterns	15	1766
2013	10636	Stretching Geometry	15	1766
2014	11141	Sugar Cubes	15	1766
2015	233	Package Pricing	14	1892
2016	720	Hares and Foxes	14	1892
2017	11139	Counting Quadrilaterals	14	1892
2018	996	Find the Sequence	13	2037
2019	10629	Truckin'	13	2037
2020	11197	Counting RNA sequences	13	2037
2021	11265	The Sultan's Problem	13	2037
2022	235	Typesetting	12	2207
2023	281	Rubik's Cube	12	2207
2024	690	Pipeline Scheduling	12	2207
2025	691	Triangle Partition	12	2207
2026	885	Telephone Directory Alphabetization	12	2207
2027	888	Donkey	12	2207
2028	949	Getaway	12	2207
2029	952	Uno game	12	2207
2030	954	Tetravex solver	12	2207
2031	959	Car Rallying	12	2207
2032	981	Systematic Cyclic Redundancy Check Codes	12	2207
2033	987	Maternity	12	2207
2034	10639	Square Puzzle	12	2207
2035	248	Cutting Corners	11	2408
2036	749	Machine Repair Simulation	11	2408
2037	849	Radar Tracking	11	2408
2038	955	Interpreting Old Maps	11	2408
2039	992	Customer Service Cost Evaluation	11	2408
2040	10492	Optimal Mastermind Strategy	11	2408
2041	10861	Security by Ambiguity	11	2408
2042	217	Radio Direction Finder	10	2649
2043	279	Spin	10	2649
2044	525	Milk Bottle Data	10	2649
2045	950	Tweedle Numbers	10	2649
2046	956	The Minimum Slot Machine	10	2649
2047	241	Sail Race	9	2943
2048	354	Crazy Calculator	9	2943
2049	786	Working with Relations	9	2943
2050	923	One Against Many	9	2943
2051	975	Gutenberg Clumsy Helper	9	2943
2052	10857	Easter Eggs	9	2943
2053	463	Polynomial Factorization	8	3311
2054	917	Euro 2004	8	3311
2055	919	Cutting Polyominoes	8	3311
2056	958	A Homer's Holiday	8	3311
2057	984	Finding Haplotypes	8	3311
2058	10383	Queen vs Rook	8	3311
2059	10955	Playfair Cipher	8	3311
2060	894	Juggling Trams	7	3784
2061	964	Custom Language	7	3784
2062	973	The Guessing Game	7	3784
2063	10778	Mathemagicland	7	3784
2064	10840	Multi-stage Compressor	6	4414
2065	11145	AvreniM	6	4414
2066	11154	An Octal World	6	4414
2067	11199	Equations in Disguise	6	4414
2068	219	Department of Redundancy Department	5	5297
2069	951	The Pieces of the Puzzle	5	5297
2070	10630	Millennium Ceremony	5	5297
2071	11143	Subtitles	5	5297
2072	693	Digital Racing Circuit	4	6621
2073	977	Old West Rumours	4	6621
2074	10657	Prince Frog II	4	6621
2075	10974	The Ridiculous Game	4	6621
2076	11211	Digital Logic	4	6621
2077	10971	Building Construction	3	8828
2078	11213	Flipull	3	8828
2079	11248	Frequency Hopping	3	8828
2080	961	Ambiguous or Incomplete Inductive Definitions	2	13243
2081	10059	The Hazard of CSE Department!	2	13243
2082	10757	Interpreting SQL	2	13243
2083	10966	3KP-BASH Project	2	13243
2084	236	VTAS - Vessel Traffic Advisory Service	1	26485
2085	863	Process Scheduling	1	26485
2086	896	Board Game	1	26485
2087	10781	Global Positioning System	1	26485
2088	10845	The crusades	1	26485
2089	11263	Nested Rectangles	1	26485
2090	224	Kissin' Cousins	0	Impossible
2091	228	Resource Allocation	0	Impossible
2092	252	Trucking	0	Impossible
2093	287	Text Comparsion	0	Impossible
2094	351	``Cheapest'' Scores	0	Impossible
2095	360	Don't Get Hives From This One!	0	Impossible
2096	363	Approximate Matches	0	Impossible
2097	364	Constitutional Computing	0	Impossible
2098	368	Indexing Web Pages	0	Impossible
2099	372	WhatFix Notation	0	Impossible
2100	456	Robotic Stacker	0	Impossible
2101	461	The Reservation Maker	0	Impossible
2102	470	Nasty Virus	0	Impossible
2103	472	Simultaneous Equations	0	Impossible
2104	479	Irrigation Flow Rates	0	Impossible
2105	480	Tempus Fugit	0	Impossible
2106	508	Morse Mismatches	0	Impossible
2107	509	RAID!	0	Impossible
2108	510	Optimal Routing	0	Impossible
2109	511	Do You Know the Way to San Jose?	0	Impossible
2110	513	Window Frames	0	Impossible
2111	522	Schedule Problem	0	Impossible
2112	528	The Problem of Train Setout	0	Impossible
2113	582	Randomly Wired Neural Nets	0	Impossible
2114	596	The Incredible Hull	0	Impossible
2115	597	Last Name First, Please	0	Impossible
2116	649	You Who?	0	Impossible
2117	675	Convex Hull of the Polygon	0	Impossible
2118	717	Calculating Expressions on Turing Machine	0	Impossible
2119	724	Reverse	0	Impossible
2120	761	Transform those strings	0	Impossible
2121	768	Crossword	0	Impossible
2122	770	Puncher	0	Impossible
2123	771	Flying Stars	0	Impossible
2124	772	Divide et unita	0	Impossible
2125	773	The JustaPox Language	0	Impossible
2126	774	Driving in City Squares	0	Impossible
2127	778	Recording a tape	0	Impossible
2128	779	Wily Hacker's Problem	0	Impossible
2129	780	Sentence Generator	0	Impossible
2130	781	Optimisation	0	Impossible
2131	788	One Day Tours	0	Impossible
2132	789	Indexing	0	Impossible
2133	791	Term Reductions	0	Impossible
2134	792	Program Modules	0	Impossible
2135	800	Crystal Clear	0	Impossible
2136	803	Page Selection by Keyword Matching	0	Impossible
2137	805	Polygon Intersections	0	Impossible
2138	867	Storing Images in a Sequence	0	Impossible
2139	875	Monopoly	0	Impossible
2140	876	Balanced Expressions	0	Impossible
2141	901	From Databases to XML	0	Impossible
2142	916	Dividing Land	0	Impossible
2143	930	Polynomial Roots	0	Impossible
2144	931	The Probable n-Ascendants	0	Impossible
2145	932	Checking the N-Queens Problem	0	Impossible
2146	933	Water Flow	0	Impossible
2147	934	Overlapping Areas	0	Impossible
2148	935	Smart Strategy	0	Impossible
2149	936	Mars for Sale	0	Impossible
2150	937	Kriss Kross Puzzle	0	Impossible
2151	938	Gilix	0	Impossible
2152	939	Genes	0	Impossible
2153	940	Autobiographical Numbers	0	Impossible
2154	941	Permutations	0	Impossible
2155	942	Cyclic Numbers	0	Impossible
2156	943	Number Format Translator	0	Impossible
2157	945	Loading a Cargo Ship	0	Impossible
2158	963	Spelling Corrector	0	Impossible
2159	965	Police Road Blocks	0	Impossible
2160	966	Lost Inheritances	0	Impossible
2161	968	Constellations	0	Impossible
2162	969	AlienAlgebra	0	Impossible
2163	971	Towers	0	Impossible
2164	994	POP	0	Impossible
2165	998	Dendogram	0	Impossible
2166	999	Book signatures	0	Impossible
2167	11188	A Strange Opera House	0	Impossible
2168	11208	Airplane Scheduling	0	Impossible
2169	11216	Irrigation	0	Impossible
2170	11217	Jewel Magnetizer	0	Impossible