Submission #854647

#	Time	Username	Problem	Language	Result	Execution time	Memory
854647		abcvuitunggio	Quality Of Living (IOI10_quality)	C++17	100 / 100	1382 ms	140264 KiB

quality

#include "quality.h"
#include <iostream>
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
	int l=1,r=R*C,kq=0,S[R][C];
	while (l<=r){
        int mid=(l+r)>>1,ch=0;
        for (int i=0;i<R;i++)
            for (int j=0;j<C;j++){
                S[i][j]=(i?S[i-1][j]:0)+(j?S[i][j-1]:0)-(i&&j?S[i-1][j-1]:0)+(Q[i][j]<mid)-(Q[i][j]>mid);
                if (i>=H-1&&j>=W-1&&S[i][j]-(i<H?0:S[i-H][j])-(j<W?0:S[i][j-W])+(i<H||j<W?0:S[i-H][j-W])>=0)
                    ch=1;
            }
        if (ch){
            kq=mid;
            r=mid-1;
        }
        else
            l=mid+1;
	}
	return kq;
}

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