제출 #696257

#제출 시각아이디문제언어결과실행 시간메모리
696257T0p_슈퍼트리 잇기 (IOI20_supertrees)C++14
11 / 100
171 ms22048 KiB
// Subtask 2

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

const int N = 1000;

bool visited[N];

int construct(vector<vector<int>> p)
{
	int n = p.size();
	vector<vector<int>> ans(n, vector<int> (n, 0));
	
	for (int i=0 ; i<n ; i++)
	{
		if (visited[i]) continue ;
		visited[i] = true;

		for (int j=0 ; j<i ; j++) if (p[i][j] == 1) return 0;

		for (int j=i+1 ; j<n ; j++) if (p[i][j] == 1)
		{
			if (visited[j]) return 0;
			visited[j] = true;

			ans[i][j] = ans[j][i] = 1;
		}	
	}

	build(ans);
	return 1;
}
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