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- #include <iostream>
- using namespace std;
- int main() {
- int n, m;
- cin >> n >> m;
- int mat[n][m];
- for(int i = 0; i < n; i++) {
- for(int j = 0; j < m; j++) {
- cin >> mat[i][j];
- }
- }
- for(int i = 0; i < n / 2; i++) {
- int zbir_gorna = 0;
- for(int j = 0; j < m; j++) {
- zbir_gorna += mat[i][j];
- }
- int zbir_dolna = 0;
- for(int j = 0; j < m; j++) {
- zbir_dolna += mat[n - 1 - i][j];
- }
- if(zbir_gorna > zbir_dolna) {
- for(int j = 0; j < m; j++) {
- swap(mat[n - 1 - i][j], mat[i][j]);
- }
- }
- }
- return 0;
- }
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