#include "train.h"
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx,avx2,fma")
using namespace std;
typedef int ll;
#define MAX 10000
vector<ll> A, s;
ll N, M;
vector<ll> adj[MAX], rev[MAX], deg, d;
std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
ll i;
A = a;
N = a.size();
M = u.size();
d.resize(N);
deg.resize(N);
vector<ll> res;
res.resize(N);
for (i = 0; i < N; i++) if (r[i]) s.push_back(i);
for (i = 0; i < M; i++) adj[u[i]].push_back(v[i]), rev[v[i]].push_back(u[i]), d[u[i]]++;
for (auto st : s) {
deg = d;
queue<ll> q;
vector<ll> vis;
vis.resize(N);
q.push(st);
vis[st] = 1;
while (!q.empty()) {
ll t = q.front();
q.pop();
for (auto x : rev[t]) {
if (vis[x]) continue;
deg[x]--;
if (a[x]) q.push(x), vis[x] = 1;
else if (deg[x] == 0) q.push(x), vis[x] = 1;
}
}
bool c = true;
for (auto asdf : adj[st]) {
if (!vis[asdf]) {
c = 0;
break;
}
}
if (c) {
for (i = 0; i < N; i++) res[i] |= vis[i];
}
}
return res;
}
