#include "quality.h"
#include <bits/stdc++.h>
using namespace std;
int rectangle(int n, int m, int row, int col, int arr[3001][3001]) {
vector <vector <int>> a(n + 1, vector <int> (m + 1));
for (int i = 0; i < n; i++) for (int j = 0; j < m; j++) a[i + 1][j + 1] = arr[i][j];
int l = 1, r = n * m;
int ans = r;
int cnt = row * col / 2 + 1;
while (l <= r) {
int mid = (l + r) / 2;
vector <vector <int>> aa(n + 1, vector <int> (m + 1));
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
aa[i][j] = (a[i][j] <= mid);
aa[i][j] = aa[i][j] + aa[i - 1][j] + aa[i][j - 1] - aa[i - 1][j - 1];
}
}
bool can = false;
for (int i = row; i <= n; i++) {
for (int j = col; j <= m; j++) {
int sum = aa[i][j] - aa[i - row][j] - aa[i][j - col] + aa[i - row][j - col];
if (sum >= cnt) {
can = true;
break;
}
}
if (can) break;
}
if (can) {
r = mid - 1;
ans = min(ans, mid);
}
else l = mid + 1;
}
return ans;
}
