Submission #1161150

#	Time	Username	Problem	Language	Result	Execution time	Memory
1161150		Hanksburger	Quality Of Living (IOI10_quality)	C++20	100 / 100	835 ms	70896 KiB

quality

#include "quality.h"
#include <bits/stdc++.h>
using namespace std;
int d[3001][3001];
int rectangle(int n, int m, int a, int b, int c[3001][3001])
{
    int l=1, r=n*m;
    while (l<r)
    {
        int mid=(l+r)/2, ok=0;
        for (int i=0; i<n; i++)
            for (int j=0; j<m; j++)
                d[i+1][j+1]=d[i+1][j]+d[i][j+1]-d[i][j]+(c[i][j]<=mid);
        for (int i=0; i<=n-a; i++)
            for (int j=0; j<=m-b; j++)
                if (d[i+a][j+b]-d[i+a][j]-d[i][j+b]+d[i][j]>a*b/2)
                    ok=1;
        if (ok)
            r=mid;
        else
            l=mid+1;
    }
    return l;
}

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