zoj 1760 Doubles

#include<stdio.h>
#include<string.h>
int main()
{
int s[500],biaoji[50];
int i,t=0;
int n;
int q=0;
memset(biaoji,0,sizeof(biaoji));
while(scanf("%d",&n)&&n!=-1)
{
if(n==0)
{
for(i=0;i<t;i++)
{
if(s[i]%2==0)
{
if(biaoji[s[i]/2]==1)
q++;
}
}
printf("%d\n",q);
memset(biaoji,0,sizeof(s));
q=0;t=0;
}
else
{
s[t++]=n;
biaoji
=1;
}
}
return 0;
}