@[shpp](/user/1304971)
by 11514zbs @ 2024-03-18 19:45:03
```cpp
#include <bits/stdc++.h>
int a, b, c[110], f[110], t, i, x, y, z, n, ans;
int main()
{
scanf("%d", &n);
for (int j = 1; j <= n; j++)
{
scanf("%d",&c[j]);
f[j]=0;
}
for (int j = 1; j <= n; j++)
{
for (i = 1; i <= n; i++)
{
for (t = 1; t <= n; t++)
{
if (c[j] == c[i] + c[t])
{
if ( j != i && i != t && j != t && f[j] == 0)
{
ans++;
f[j] = 1;
}
}
}
}
}
printf("%d", ans);
return 0;
}
```
求关×1
QwQ
by 11514zbs @ 2024-03-18 19:49:32
加一个判断去重操作，因为一个数可能是多组数的和，但只能算一个
（我30分就是这样的。。
by canwen2 @ 2024-03-31 19:36:04