func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int q;     cin >> q;     while (q--) {       vector<vector<int> > grid;       int h, w;       cin >> h >> w;       grid.assign(h, vector<int>(w, 0));       for (int i = 0; i < h; i++) {         for (int j = 0; j < w; j++) {           scanf( %d , &grid[i][j]);         }       }       int diff1 = 0;       int diff2 = 0;       for (int j = 0; j < w; j++) {         diff1 += grid[h / 2 - 1][j] - grid[h / 2][j];         diff2 += grid[0][j] - grid[h - 1][j];       }       if (abs(diff1) > abs(diff2))         cout <<  YES  << endl;       else         cout <<  NO  << endl;     }     return 0;   }   