제출 #291012

#제출 시각아이디문제언어결과실행 시간메모리
291012Saboon장난감 기차 (IOI17_train)C++17
11 / 100
1080 ms1544 KiB
// Subtask 3 #include "train.h" #include <bits/stdc++.h> using namespace std; const int maxn = 5000 + 10; int n, m; vector<int> g[maxn]; bool visited[maxn]; void dfs(int v){ visited[v] = 1; for (auto u : g[v]) if (!visited[u]) dfs(u); } vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) { n = a.size(), m = u.size(); for (int i = 0; i < m; i++){ g[v[i]].push_back(u[i]); } vector<int> dp(n); for (int i = 0; i < n; i++){ dp[i] = 0; if (r[i]){ memset(visited, 0, sizeof visited); dfs(i); for (int j = 0; j < m; j++) if (visited[v[j]] and u[j] == i) dp[i] = 1; } } for (int t = 0; t < n; t++) for (int i = 0; i < m; i++) dp[u[i]] |= dp[v[i]]; return dp; }
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