#include<stdio.h>
int main()
{
    int n,m,ans,i,j;
    while(1){
    scanf("%d%d",&n,&m); if(m==0&&n==0) break;	
        ans=1;
        for(i=n+m,j=1;i>=m+1;j++,i--)
        ans=ans*i/j;
        printf("%d\n",ans);
    }
    return 0;
}
//Time Limit Exceeded

• Re:Please give me some tips!(So easy,but I can't do it very well) (302) 609640827 2011-10-26 21:02:35