练28.1 多边形内角和

1
Unknown User @ 2025-9-7 14:58:23

#include <bits/stdc++.h> using namespace std;

int main() { int n, a ; cin >> n; int m = (n - 2) * 180; for (int i = 1; i < n; i++) { cin >> a; m = m - a; } cout << m; return 0; }
-1
Unknown User @ 2025-9-7 14:39:27
#include <bits/stdc++.h> using namespace std;

int main() { int n, a, s = 0; cin >> n ; s = (n - 2) * 180; for (int i = 1; i < n ; i++) { cin >> a; s = s - a;
```
}

cout << s;
return 0;
```
}