#include<stdio.h>
long f(long n,long m)
{
	if(m==1)return n;
	if(m==0)return 1;
	else
	{
		return (f(n-1,m-1)*n)/m;
	}
}
int main()
{
	long n,m;
	while(scanf("%ld%ld",&n,&m))
	{
		if(n==0&&m==0)
		{
			break;
		}
		else
		{
			if(m>n/2)m=n-m;
			printf("%ld\n",f(n,m));
		}
	}
	return 0;
}

• 大家快帮我看看 吧 (371) sunwen 2007-09-04 19:57:38
  • Re:大家快帮我看看 吧 (6) sun_huangjian 2007-09-04 20:08:06
• Re:这个怎么错了 我在线等 (12) wwwwwwking 2007-12-30 14:18:45