Hdu 5051 Fraction(本福特定律)_本福特定律 mad

作者：IT小白 | 2024-02-10 21:14:22

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本福特定律 mad

题目链接

Fraction

Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 240 Accepted Submission(s): 56

Problem Description

Given a number n, and a geometric progression a _i = b * q^i, i ≥ 0, what is the fraction of the elements of that progression with decimal notation that has the decimal notation of n as prefix ?

More formally, if c _i out of the first i elements of the progression start with n in decimal notation, you need to find the limit

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