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- #include <bits/stdc++.h>
- using namespace std;
- int main() {
- int n, m;
- cin >> n >> m;
- vector<vector<int>> matrix(n, vector<int>(m));
- for(auto &rows : matrix)
- for(auto &pos : rows)
- cin >> pos;
- int maxFruits = 0;
- for(int i = 0; i < n; ++i)
- for(int j = 0; j < m; ++j) {
- int sub_min = INT_MAX;
- for(int i_sub = 0; i_sub <= i; ++i_sub)
- for(int j_sub = 0; j_sub <= j; ++j_sub)
- sub_min = min(sub_min, matrix[i_sub][j_sub]);
- maxFruits = max(maxFruits, matrix[i][j] - sub_min);
- }
- cout << maxFruits << '\n';
- return 0;
- }
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