```
#include<stdio.h>
int main() {
int n;
scanf_s("%d", &n);
int a[101];
int x = 0;
int y[101] = { 2 };
for (int i = 0; i < n; i++) {
scanf_s("%d", &a[i]);
}
for (int i = 0; i < n; i++) {
for (int j = i+1; j < n; j++) {
for (int k = 0; k < n; k++) {
if (i != j && i != k && j != k) {
if (a[i] + a[j] == a[k]&&y[k]!=1) {
x++;
y[k] = 1;
}
}
}
}
}
printf("%d", x);
return 0;
}感谢各位好了！
```
by QingJiu_ZaiZhou @ 2024-03-25 10:58:48