Submission #927317

#	Time	Username	Problem	Language	Result	Execution time	Memory
927317		VMaksimoski008	Quality Of Living (IOI10_quality)	C++14	100 / 100	1140 ms	140364 KiB

quality

#include <iostream>
#include "quality.h"
using namespace std;
 
int rectangle(int n, int m, int h, int w, int q[3001][3001]) {
    int l=(h*w+1)/2, r=n*m-(h*w)/2, A=0, P[3001][3001];
 
    while(l <= r) {
        int M = (l + r) / 2;
        bool ok = 0;
 
        for(int i=1; i<=n; i++)
            for(int j=1; j<=m; j++)
                P[i][j] = (q[i-1][j-1] <= M) + P[i-1][j] + P[i][j-1] - P[i-1][j-1];
 
        for(int i=1; i+h-1<=n; i++)
            for(int j=1; j+w-1<=m; j++)
                if(2 * (P[i+h-1][j+w-1] - P[i-1][j+w-1] - P[i+h-1][j-1] + P[i-1][j-1]) >= h * w) ok = 1;
 
        if(ok) A = M, r = M - 1;
        else l = M + 1;
    }
 
    return A;
}

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