Submission #1370188

#	Time	Username	Problem	Language	Result	Execution time	Memory
1370188		kawhiet	Rectangles (IOI19_rect)	C++20	37 / 100	5094 ms	22676 KiB

rect

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

long long count_rectangles(vector<vector<int>> a) {
	int n = a.size();
	int m = a[0].size();
	long long ans = 0;
	for (int r1 = 1; r1 < n - 1; r1++) {
		for (int r2 = r1; r2 < n - 1; r2++) {
			for (int c1 = 1; c1 < m - 1; c1++) {
				for (int c2 = c1; c2 < m - 1; c2++) {
					bool ok = true;
					for (int i = r1; i <= r2; i++) {
						for (int j = c1; j <= c2; j++) {
							int x = min({a[i][c1 - 1], a[i][c2 + 1], a[r1 - 1][j], a[r2 + 1][j]});
							if (a[i][j] >= x) {
								ok = false;
								break;
							}
						}
						if (!ok) {
							break;
						}
					}
					ans += ok;
				}
			}
		}
	}
	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