计蒜客 god of gambler

赌徒输光问题

链接：https://blog.csdn.net/xiazeyu513/article/details/78151388

#include <bits/stdc++.h> using namespace std; int main(){ int n,m; while(2==scanf("%d%d",&n,&m)){ printf("%.5lf\n",1.0*n/(n+m)); } return 0; }