Submission #958099

#	Time	Username	Problem	Language	Result	Execution time	Memory
958099		ThegeekKnight16	Quality Of Living (IOI10_quality)	C++17	100 / 100	1712 ms	176140 KiB

quality

#include <bits/stdc++.h>
#include "quality.h"
using namespace std;

bool Teste(int x, vector<vector<int>> &Q, int R, int C, int H, int W)
{
	vector<vector<int>> S(R+1, vector<int>(C+1));
	for (int i = 1; i <= R; i++)
		for (int j = 1; j <= C; j++)
			S[i][j] = (int)(Q[i][j] <= x) + S[i][j-1] + S[i-1][j] - S[i-1][j-1];

	for (int i = H; i <= R; i++)
		for (int j = W; j <= C; j++)
			if (S[i][j] - S[i][j-W] - S[i-H][j] + S[i-H][j-W] >= (H*W + 1)/2)
				return true;

	return false;
}


int rectangle(int R, int C, int H, int W, int _Q[3001][3001])
{
	vector<vector<int>> Q(R+1, vector<int>(C+1));
	for (int i = 0; i < R; i++)
		for (int j = 0; j < C; j++)
			Q[i+1][j+1] = _Q[i][j];

	int ini = 1, fim = R*C;
	while (ini < fim)
	{
		int m = (ini + fim) >> 1;
		if (Teste(m, Q, R, C, H, W)) fim = m;
		else ini = m+1;
	}
	return fim;
}

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