Submission #393485

#	Time	Username	Problem	Language	Result	Execution time	Memory
393485		AmineTrabelsi	Rectangles (IOI19_rect)	C++14	25 / 100	5066 ms	28296 KiB

rect

#include "rect.h"
#include <bits/stdc++.h>
using namespace std;
long long count_rectangles(vector<vector<int>> a) {
    // naive
    int n = a.size(),m = a[0].size();
    long long res = 0;
    auto is_valid = [&](int x,int b,int c,int d){
        for(int i=x;i<=c;i++){
            for(int j=b;j<=d;j++){
                if(a[i][j] >= min({a[x-1][j],a[c+1][j],a[i][b-1],a[i][d+1]}))return false;
            }
        }
        return true;
    };
    for(int i=1;i+1<n;i++){
        for(int j=1;j+1<m;j++){
            for(int k=1;k<=i;k++){
                for(int l=1;l<=j;l++){
                    if(is_valid(k,l,i,j)){
                        res ++;
                    }

                }
            }
        }
    }
	return res;
}

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