Submission #1134094

#	Time	Username	Problem	Language	Result	Execution time	Memory
1134094		alterio	Rectangles (IOI19_rect)	C++20	37 / 100	5094 ms	34116 KiB

rect

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

using namespace std;

#define ll long long

ll ans = 0;

vector<vector<int>> a;

void check(int x1, int y1, int x2, int y2) {
	for (int i = x1; i <= x2; i++) {
		for (int j = y1; j <= y2; j++) {
			if ((a[i][j] >= a[i][y1 - 1]) || (a[i][j] >= a[i][y2 + 1]) || (a[i][j] >= a[x1 - 1][j]) || (a[i][j] >= a[x2 + 1][j])) return;
		}
	}
	ans++;
}

ll count_rectangles(vector<vector<int>> _a) {
	a = _a;
	int n = a.size(), m = a[0].size();
	for (int i = 1; i < n - 1; i++) {
		for (int j = 1; j < m - 1; j++) {
			for (int l = i; l < n - 1; l++) {
				for (int w = j; w < m - 1; w++) {
					check(i, j, l, w);
				}
			}
		}
	}
	return ans;
}

• Subtask 1: 8 / 8
• Subtask 2: 7 / 7
• Subtask 3: 12 / 12
• Subtask 4: 0 / 22
• Subtask 5: 10 / 10
• Subtask 6: 0 / 13
• Subtask 7: 0 / 28