Submission #545239

#	Time	Username	Problem	Language	Result	Execution time	Memory
545239		AbdelmagedNour	Quality Of Living (IOI10_quality)	C++17	0 / 100	5032 ms	340 KiB

quality

#include "grader.h"
//#include "grader.cpp"
int rectangle(int R, int C, int H, int W, int Q[3001][3001]);
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {
	int n=R,m=C,x=H,y=W;
	int pre[n][m];
	int l=1,r=n*m,res=1000000000;
	while(l<=r){
        int md=(l+1)>>1;
        bool flag=0;
        for(int i=0;i<n&&!flag;i++){
            for(int j=0;j<m&&!flag;j++){
                pre[i][j]=(i?pre[i-1][j]:0)+(j?pre[i][j-1]:0)-(i&&j?pre[i-1][j-1]:0)+(Q[i][j]<=md?1:-1);
                if(i>=x-1&&j>=y-1){
                    int sum1=pre[i][j];
                    int sum2=(j-y+1?pre[i][j-y]:0);
                    int sum3=(i-x+1?pre[i-x][j]:0);
                    int sum4=(i-x+1&&j-y+1?pre[i-x][j-y]:0);
                    if((sum1-sum2-sum3+sum4)<1)continue;
                    flag=1;
                    break;
                }
            }
        }
        if(flag)r=(res=md)-1;
        else l=md+1;
	}
	return res;
}

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