Submission #587365

#	Time	Username	Problem	Language	Result	Execution time	Memory
587365		HeyYouNotYouYou	Quality Of Living (IOI10_quality)	C++14	100 / 100	1969 ms	175276 KiB

quality

#include "quality.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
int rectangle(int R, int C, int H, int W, int Q[3001][3001]) {

	int n = R , m = C;
	int l = 1 , r = R*C, ans = R*C;
	while(l<=r)
	{
		int mid = (l+r)/2;
		//cout<<mid<<endl;
		int less[n+1][m+1]={0} , more[n+1][m+1]={0},cursmall=0,curbig=0;
		memset(less,0,sizeof less);
		memset(more,0,sizeof more);
		for(int i = 1 ; i <= n ; i ++)
		{
			for(int j = 1 ; j <= m ; j ++)
			{
				less[i][j] = less[i-1][j] + less[i][j-1] - less[i-1][j-1] + (Q[i-1][j-1]<mid);
				more[i][j] = more[i-1][j] + more[i][j-1] - more[i-1][j-1] + (Q[i-1][j-1]>mid);

			}
		}

		int ok = 0;
		for(int i = 1 ; i <= n-H+1 ; i ++)
		{
			for(int j = 1 ; j <= m-W+1 ; j ++)
			{
				//cout<<mid<<" "<<i+H-1<<" "<<j+W-1<<endl;
				int olayel = less[i+H-1][j+W-1] - less[i-1][j+W-1] - less[i+H-1][j-1] + less[i-1][j-1];
				int kteer = more[i+H-1][j+W-1] - more[i-1][j+W-1] - more[i+H-1][j-1] + more[i-1][j-1];
				if(olayel == kteer  && olayel == (H*W)/2) {
					//cout<<"!"<<i<<" "<<j<<" "<<olayel<<" "<<kteer<<endl;
					ans=min(ans,mid),ok=1;
				}
				if(olayel >= kteer) ok=1;
			}
		}

		if(ok){
			r = mid-1;
		}
		else{
			l = mid+1;
		}
	}
	return ans;
}

Compilation message (stderr)

quality.cpp: In function 'int rectangle(int, int, int, int, int (*)[3001])':
quality.cpp:13:47: warning: unused variable 'cursmall' [-Wunused-variable]
   13 |   int less[n+1][m+1]={0} , more[n+1][m+1]={0},cursmall=0,curbig=0;
      |                                               ^~~~~~~~
quality.cpp:13:58: warning: unused variable 'curbig' [-Wunused-variable]
   13 |   int less[n+1][m+1]={0} , more[n+1][m+1]={0},cursmall=0,curbig=0;
      |                                                          ^~~~~~

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