Hello World洛谷源神！_洛谷hello world 编程

U264427 Hello World - 洛谷 | 计算机科学教育新生态 (luogu.com.cn)

思路：将无限循环小数转化为分数输出罢了

#include<iostream>
#include<cstring>
#include<cmath>
#include<set>
using namespace std;
using ll = long long;
ll gcd(ll x,ll y){
	return y?gcd(y,x%y):x;
	}
int main ( ){
	ios::sync_with_stdio ( 0 ) , cin.tie ( 0 ) , cout.tie ( 0 );
	int t;cin>>t;
	while(t--){
		string s;cin>>s;
		ll w=0,r=0;
		
		
		for(int i=0;i<s.length();i++){
			w*=10;
			r*=10;
			w+=9;
			r+=s[i]-'0';
			
		}
		ll ans=gcd(w,r);
		
		ll l=r/ans;
		ll t=w/ans;
		cout<<l<<' '<<t<<'\n';
	}
	
	return 0;
}