Submission #1237162

#	Time	Username	Problem	Language	Result	Execution time	Memory
1237162		Sir_Ahmed_Imran	Rectangles (IOI19_rect)	C++17	10 / 100	17 ms	20552 KiB

rect

#include "rect.h"
#include <bits/stdc++.h>
using namespace std;
#define MAXN 2500
#define nl '\n'
#define ff first
#define ss second
#define ll long long
#define ld long double
#define terminator main
#define pll pair<ll,ll>
#define add insert
#define append push_back
#define pii pair<int,int>
#define all(x) (x).begin(),(x).end()

int x[MAXN];
int mx[MAXN][MAXN];

ll count_rectangles(vector<vector<int>> a){
	int n;
	ll ans = 0;
	n = a[0].size();
	if(a.size() < 3) return ans;
	for(int i = n - 2; i > 0; i--)
		if(min(a[0][i], a[2][i]) > a[1][i])
			x[i] = max(i, x[i + 1]);
	for(int i = 1; i < n - 1; i++)
		for(int j = i; j < n - 1; j++)
			mx[i][j] = max(mx[i][j - 1], a[1][j]);
	for(int i = 1; i < n - 1; i++)
		for(int j = i; j < n -1; j++)
			if(min(a[1][i - 1], a[1][j + 1]) > mx[i][j] && x[i] >= j)
				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