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用递归做的,,但是超时,,,,,:)#include <stdio.h>
int work(int m,int n)
{
if(n==0)return(m);
if(m==1)return(1);
return(1+work(m-1,n-1)+work(m-1,n));
}
void main()
{
int m,n,no=1;
do
{
scanf("%d%d",&m,&n);
if(m==0&&n==0)break;
printf("Case %d: %d\n",no,work(m,n));
no++;
}
while(1);
}
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