#include <stdio.h>
int main()
{
  int s[20],i,j,k,a,b;
    scanf("%d",&s[0]);
    while(s[0]!=-1)
    {
    k=0;
    for(i=0;s[i]>0;)
        scanf("%d",&s[++i]);
    for(j=0;j<i-1;j++)
    {
        for(b=0;b<i-1;b++)
        if(s[b]==2*s[j])
        k++;
    }
    printf("%d\n",k);
    scanf("%d",&s[0]);
    }

}

• Re:为什么错呢，看看吧 (39) ljxluois 2007-09-04 20:30:01
• Re:为什么错呢，看看吧 (78) ljxluois 2007-09-04 20:41:45