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  1. #include <bits/stdc++.h>
  2. #define endl '\n'
  3. using namespace std;
  4. using ll = long long;
  5.  
  6. int main(){
  7.     ios::sync_with_stdio(false);
  8.     cin.tie(NULL);
  9.     freopen("Diagonal.inp","r",stdin);
  10.     freopen("Diagonal.out","w",stdout);
  11.     int n;
  12.     cin >> n;
  13.     int cnt = 0;
  14.     for(int i = 1; i <= n; i++) {
  15.         ll sum = 0;
  16.         ll diag = 0;
  17.         for (int j = 1; j <= n; j++) {
  18.             ll x;
  19.             cin >> x;
  20.             if (x < 0) {
  21.                 cout << "NO";
  22.                 return 0;
  23.             }
  24.             sum += x;
  25.             if (i == j) diag = x;
  26.         }
  27.         if (diag < sum - diag) {
  28.             cout << "NO";
  29.             return 0;
  30.         }
  31.         if (diag > sum - diag) cnt++;
  32.     }
  33.     if(cnt == 0){
  34.         cout << "NO";
  35.     }else{
  36.         cout << "YES\n";
  37.         cout << cnt;
  38.     }
  39.     return 0;
  40. }
  41.  
Success #stdin #stdout 0.01s 5316KB
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https://ideone.com/vDa45S
language:
C++14 (gcc 8.3)
created:
1 hour ago
visibility:
public

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