Submission #1368942

#	Time	Username	Problem	Language	Result	Execution time	Memory
1368942		vidux	Rectangles (IOI19_rect)	C++17	10 / 100	3 ms	344 KiB

rect

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

long long count_rectangles(std::vector<std::vector<int> > a) {
	int n = (int)a.size();
	if (n < 3) return 0;
	int m = (int)a[0].size();
	vector<int> ok(m), b = a[1];
	for (int i = 1; i < m-1; i++) ok[i] = (a[0][i] > a[1][i] && a[1][i] < a[2][i]);
	ll ans = 0;
	for (int l = 1; l < m-1; l++) {
		int mn = b[l];
		for (int r = l; r < m-1; r++) {
			if (!ok[r]) break;
			mn = max(mn, b[r]);
			if (b[l-1] > mn && mn < b[r+1]) ans++;
		}
	}
	return ans;
}

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