제출 #696260

#제출 시각아이디문제언어결과실행 시간메모리
696260T0p_슈퍼트리 잇기 (IOI20_supertrees)C++14
11 / 100
167 ms22024 KiB
// Subtask 2 #include "supertrees.h" #include <bits/stdc++.h> using namespace std; const int N = 1000; int pa[N]; 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++) pa[i] = i; for (int i=0 ; i<n ; i++) { if (visited[i]) { for (int j=0 ; j<n ; j++) if (p[i][j] == 1 && pa[i] != pa[j]) return 0; } else { 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; pa[j] = i; ans[i][j] = ans[j][i] = 1; } } } build(ans); return 1; }
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