#include "quality.h"
const int N = 3010;
int pom[N][N];
bool check (int x, int n, int m, int h, int w) {
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
if (a[i][j] <= x) pom[i][j] = 1;
pom[i][j] = pom[i][j]+pom[i-1][j]+pom[i][j-1]-pom[i-1][j-1];
}
}
/*for (int i = 1; i <= n; i++) {
for (int j = 1; j <= m; j++) {
cout << pom[i][j] << " ";
}
cout << endl;
}*/
for (int i = h; i <= n; i++) {
for (int j = w; j <= m; j++) {
int val = pom[i][j]-pom[i-h][j]-pom[i][j-w]+pom[i-h][j-w];
if (val >= (h*w+1)/2) return true;
}
}
return false;
}
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
int lo = 1, hi = R*C, mid;
while (lo < hi) {
mid = (lo+hi)/2;
if (check(mid, R, C, H, W)) {
hi = mid;
}
else {
lo = mid+1;
}
}
return lo;
}
Compilation message
quality.cpp: In function 'bool check(int, int, int, int, int)':
quality.cpp:8:8: error: 'a' was not declared in this scope
8 | if (a[i][j] <= x) pom[i][j] = 1;
| ^
