Submission #829024

#	Time	Username	Problem	Language	Result	Execution time	Memory
829024		PurpleCrayon	Rectangles (IOI19_rect)	C++17	0 / 100	20 ms	416 KiB

rect

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

#define sz(v) int(v.size())
#define ar array
typedef long long ll;
const int N = 2.5e3+10, MOD = 1e9+7;

long long count_rectangles(vector<vector<int>> a) {
    int n = sz(a), m = sz(a[0]);
    
    ll ans = 0;
	for (int l1 = 1; l1 < n-1; l1++) {
        for (int r1 = l1; r1 < n-1; r1++) {
            for (int l2 = 1; l2 < m-1; l2++) {
                for (int r2 = 1; r2 < m-1; r2++) {
                    bool bad = 0;
                    for (int i = l1; i <= r1 && !bad; i++) {
                        for (int j = l2; j <= r2 && !bad; j++) {
                            if (a[i][j] >= a[l1-1][j]) bad = 1;
                            if (a[i][j] >= a[i][l2-1]) bad = 1;
                            if (a[i][j] >= a[r1+1][j]) bad = 1;
                            if (a[i][j] >= a[i][r2+1]) bad = 1;
                        }
                    }

                    ans += !bad;
                }
            }
        }
    }

    return ans;
}

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