Submission #777425

#	Time	Username	Problem	Language	Result	Execution time	Memory
777425		Petrix	Quality Of Living (IOI10_quality)	C++17	0 / 100	34 ms	106156 KiB

quality

#include "grader.h"
#include <bits/stdc++.h>

using namespace std;
int rectangle(int r,int c,int h,int w,int q[3001][3001]){
    int sm[3001][3001],bi[3001][3001],v[3001][3001],st,dr,mij,i,j,ans;
    for(i=1;i<=r;i++){
        for(j=1;j<=c;j++){
            v[i][j]=q[i-1][j-1];
        }
    }
    st=0;dr=r*c;ans=r*c;
    while(st<dr){
        int s,b;
        mij=(st+dr)/2;
        bool adv=0;
        for(i=1;i<=r;i++){
            s=0;b=0;
            for(j=1;j<=c;j++){
                sm[i][j]=sm[i-1][j]+s;
                if(v[i][j]<mij){
                    sm[i][j]++;s++;
                }
                bi[i][j]=bi[i-1][j]+b;
                if(v[i][j]>mij){
                    bi[i][j]++;b++;
                }
            }
        }
        for(i=1;i<=r-h+1;i++){
            for(j=0;j<c-w+1;j++){
                s=sm[i+h-1][j+w-1]-sm[i+h-1][j-1]-sm[i-1][j+w-1]+sm[i-1][j-1];
                b=bi[i+h-1][j+w-1]-bi[i+h-1][j-1]-bi[i-1][j+w-1]+bi[i-1][j-1];
                int n=r*c;
                if(s==b && s<=n/2 && n<=n/2)
                    ans=min(ans,mij);
                if(s>=b)
                    adv=1;

            }
        }
        if(adv==0)
            st=mij+1;
        else
            dr=mij-1;
    }
    return ans;
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20