Submission #1343762

#	Time	Username	Problem	Language	Result	Execution time	Memory
1343762		mayac	Quality Of Living (IOI10_quality)	C++20	100 / 100	854 ms	70896 KiB

quality

#include <stdio.h>
#include <stdlib.h>
#include "quality.h"
#include <bits/stdc++.h>
using namespace std;

int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
    int ans=0;
    int sum[3001][3001];
    for(int i=0;i<=R;i++)sum[i][0]=0;
    for(int i=0;i<=C;i++)sum[0][i]=0;
    for(int step=R*C;step>0;step/=2){
        ans+=step;
        for(int i=0;i<R;i++){
            for(int j=0;j<C;j++){
                sum[i+1][j+1]=sum[i][j+1]+sum[i+1][j]+(Q[i][j]<=ans)-sum[i][j];
            }
        }
        bool flag=0;
        for(int i=H;i<=R;i++){
            for(int j=W;j<=C;j++){
                flag=flag||((sum[i][j]-sum[i][j-W]-sum[i-H][j]+sum[i-H][j-W])>((H*W)/2));
            }
        }
    
        if(flag)ans-=step;
        if(step>1)step++;
        
    }
	return ans+1;
}

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