Submission #531452

#	Time	Username	Problem	Language	Result	Execution time	Memory
531452		AdamGS	Quality Of Living (IOI10_quality)	C++17	100 / 100	2208 ms	140320 KiB

quality

#include "quality.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=3e3+7;
int sum[LIM][LIM];
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
	int p=1, k=R*C;
	while(p<k) {
		int sr=(p+k)/2;
		rep(i, R) rep(j, C) {
			sum[i+1][j+1]=sum[i+1][j]+sum[i][j+1]-sum[i][j];
			if(Q[i][j]<=sr) ++sum[i+1][j+1];
		}
		int ma=0;
		for(int i=H; i<=R; ++i) for(int j=W; j<=C; ++j) {
			ma=max(ma, sum[i][j]-sum[i-H][j]-sum[i][j-W]+sum[i-H][j-W]);
		}
		if(ma<(H*W+1)/2) p=sr+1; else k=sr;
	}
	return p;
}

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