# | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
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612570 | 2022-07-29T17:45:53 Z | MohamedAliSaidane | 장난감 기차 (IOI17_train) | C++14 | 0 ms | 0 KB |
#include <bits/stdc++.h> //#include "train.h" using namespace std; typedef long long ll; typedef double ld; typedef pair<int,int> pii; typedef pair<ll,ll> pll; typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pii> vpi; typedef vector<pll> vpl; #define pb push_back #define popb pop_back #define all(x) (x).begin(),(x).end() #define ff first #define ss second const int nax = 5004; const int MOD = 1e9 + 7; int n, m; vi adj[nax]; int vis[nax]; int A[nax], C[nax]; int dfs(int x, int dep ) { if(dep == 0) return 0; if(C[x] == 1) dep = n; vis[x] = 1; int ans = -1; for(auto e: adj[x]) { int rep; if(vis[e]) rep = e == x? C[x]: 1; else rep = dfs(e, dep - 1); if(ans == -1) ans = rep; else { if(A[x]) if(rep == 1) ans = 1; if(!A[x]) if(rep == 0) ans = 0; } } vis[x] = 0 ; return ans; } vi who_wins(vi a, vi r, vi u, vi v) { n = a.size(); m = u.size(); for(int i = 0 ; i < n; i++) { A[i] = a[i]; C[i ] = r[i]; } for(int i = 0 ; i < m; i ++) { adj[u[i]].pb(v[i]); } vi ans(n, 0); for(int i = 0 ; i < n; i ++) { ans[i] = dfs(i, n); }