Submission #1059876

#	Time	Username	Problem	Language	Result	Execution time	Memory
1059876		Unforgettablepl	Rectangles (IOI19_rect)	C++17	13 / 100	479 ms	523844 KiB

rect

#include "rect.h"
#include <bits/stdc++.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;
	vector visited = a;
	for(int i=0;i<n;i++) {
		for(int j=0;j<m;j++) {
			if(visited[i][j])continue;
			int minx = n;
			int maxx = 0;
			int miny = m;
			int maxy = 0;
			int area = 0;
			function<void(int,int)> dfs = [&](int x,int y) {
				if(visited[x][y])return;
				visited[x][y]=true;
				area++;
				minx=min(minx,x);
				maxx=max(maxx,x);
				miny=min(miny,y);
				maxy=max(maxy,y);
				if(x!=0)dfs(x-1,y);
				if(y!=0)dfs(x,y-1);
				if(x!=n-1)dfs(x+1,y);
				if(y!=m-1)dfs(x,y+1);
			};
			dfs(i,j);
			if(minx==0)continue;
			if(miny==0)continue;
			if(maxx==n-1)continue;
			if(maxy==m-1)continue;
			if((maxx-minx+1)*(maxy-miny+1)==area)ans++;
		}
	}
	return ans;
}

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