Submission #1039944

#	Time	Username	Problem	Language	Result	Execution time	Memory
1039944		ArthuroWich	Quality Of Living (IOI10_quality)	C++17	100 / 100	1079 ms	140536 KiB

quality

#include "quality.h"
#include<bits/stdc++.h>
using namespace std;
int rectangle(int n, int m, int h, int w, int q[3001][3001]) {
	int l = 1, r = n*m;
	while(l < r) {
		int mi = (l+r)/2;
		vector<vector<int>> pref(n+1, vector<int>(m+1, 0));
		bool f = 0;
		for (int i = 1; i <= n; i++) {
			for (int j = 1; j <= m; j++) {
				pref[i][j] = pref[i-1][j]+pref[i][j-1]-pref[i-1][j-1]+(q[i-1][j-1]<=mi);
				if (i-h >= 0 && j-w >= 0) {
					if (pref[i][j]-pref[i][j-w]-pref[i-h][j]+pref[i-h][j-w] > h*w/2) {
						f = 1;
					}
				}
			}
		}
		if (f) {
			r = mi;
		} else {
			l = mi+1;
		}
	}
	return l;
}

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 20 / 20
• Subtask 5: 20 / 20