```c
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
int n,i,j,k,a=0,b=0,c=0,count[100]={0};
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%d",&count[i]);
}
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
{
if(j==i)
continue;
for(k=j+1;k<n;k++)
{
if(k==j||k==i)
continue;
a=count[j]+count[k];
if(count[i]==a&&c==0)
{
b++;
c=1;
}
}
}
c=0;
}
printf("%d",b);
return 0;
}
```
@[勤问型码农](/space/show?uid=170924) 用这个解决了
by lvscv @ 2019-03-11 19:47:06