fork download 
  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. const ll con = 1e9;
  4. #define YES cout << "YES\n"
  5. #define NO cout << "NO\n"
  6. #define Yes cout << "Yes\n"
  7. #define No cout << "No\n"
  8. using namespace std;
  9. void solve() {
  10.     int n , m ;
  11.     cin >> n >> m;
  12.     bool notiring = false ;
  13.     ll grid[n][m] , sumx = 0 ;
  14.     for (int i = 0; i < n; i++) {
  15.         for (int j = 0; j < m; j++) {
  16.             cin >> grid[i][j];
  17.             sumx += grid[i][j];
  18.         }
  19.     }
  20.     if (n % 2 != 0 || m % 2 != 0)
  21.         notiring = true;
  22.     if (notiring) {
  23.         cout<<sumx<<'\n';
  24.         return;
  25.     }
  26.     ll mini = LONG_LONG_MAX ;
  27.     for ( int i = 0 ; i < n ; i++) {
  28.         for ( int j = 0 ; j < m ; j++) {
  29.             if ( (i + j) % 2 != 0)
  30.                 mini = min(mini, grid[i][j]);
  31.         }
  32.     }
  33.     cout << sumx - mini << '\n';
  34. }
  35. int main(){
  36.     ios::sync_with_stdio(0);
  37.     cin.tie(0);
  38.     solve();
  39. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
Standard input is empty
stdout 
-9223372036854775807
https://ideone.com/7Ao6PI
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!