#include<stdio.h>
__int64 C(__int64 n,__int64 m)
{		  
	if(m==0)
		return 1;
	else if(m==1)
		return n;
	else
		return C(n-1,m-1)*n/m;
}
int main()
{
	__int64 n,k;
	while(scanf("%I64d%I64d",&n,&k)!=EOF)
	{
		if(n==0&&k==0)
			break;
		printf("%I64d\n",C(n,k));
	}
	return 0;
}

• Re:why runtime error? (35) tang123456 2009-10-26 22:50:57
• Re:why runtime error? (340) tangyipengxin 2010-01-02 13:48:02