#include<iostream>
using namespace std;
double com(double m, double n){
	if(n > m - n){
		n = m - n;
	}
	double sum,i;
	sum = 1.0;
	for(i = m; i > m - n; i--){
		sum *= i / (i - m + n);
	}
	return sum;
}
int main(){
	double m, n;
	while(cin>>m>>n){
		if(m == 0.0 && n == 0.0){
			break;
		}
		 printf("%.0lf\n",com(m+n,m));    
	}
	return 0;
}
输出为什么只能用printf %.0lf 用cout（int）就wa  用cout(floor)也是wa

• int不行的，要是unsigned int的嘛 (0) alazyrabbit 2009-10-26 21:06:31