Lang:G++
Edit1234567891011121314151617181920212223242526272829#include <bits/stdc++.h>using namespace std;int main(){int n,m;cin >> n >> m;set<int> res,yu;int temp = n * 10,ty =0;while(true){int shang = temp/m;ty = temp%m;if(yu.find(ty) == yu.end() )yu.insert(ty);else if(res.find(shang) == res.end() ){}elsebreak;res.insert(shang);if(ty == 0)break;temp = ty * 10;}for(set<int>::iterator it = res.begin(); it != res.end(); ++it)cout<<*it;}