#include "train.h"
#include <bits/stdc++.h>
using namespace std;
//macros
typedef long long ll;
typedef pair<int, int> ii;
typedef pair<ll, ll> lll;
typedef tuple<int, int, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<iii> viii;
typedef vector<ll> vll;
typedef vector<lll> vlll;
#define REP(a,b,c) for(int a=int(b); a<int(c); a++)
#define RE(a,c) REP(a,0,c)
#define RE1(a,c) REP(a,1,c+1)
#define REI(a,b,c) REP(a,b,c+1)
#define REV(a,b,c) for(int a=int(c-1); a>=int(b); a--)
#define INF 1e9
#define pb push_back
#define fi first
#define se second
#define sz size()
const int MX=6000;
int n, m;
vi a, r, u, v;
vi res;
vi adj[MX];
int path[MX];
bool isLoop(int u, int start) {
if(r[u]) return true;
if(u == start) return false;
return isLoop(adj[u][path[u]], start);
}
bool winner(int u) {
if(a[u]) {
// try to charge station
bool ans = 0;
RE(i,adj[u].sz) {
path[u] = i;
if(path[adj[u][i]] != -1) {
if(isLoop(adj[u][i], u) == 1) {
ans = 1;
break;
}
} else if(winner(adj[u][i]) == 1) {
ans = 1;
break;
}
}
path[u] = -1;
return ans;
} else {
// try to run out of energy
bool ans = 1;
RE(i,adj[u].sz) {
path[u] = i;
if(path[adj[u][i]] != -1) {
if(isLoop(adj[u][i], u) == 0) {
ans = 0;
break;
}
} else if(winner(adj[u][i]) == 0) {
ans = 0;
break;
}
}
path[u] = -1;
return ans;
}
}
vi who_wins(vi A, vi R, vi U, vi V) {
a = A; r = R; u = U; v = V;
n = a.size(); m = u.size();
res.resize(n);
RE(i,m) adj[u[i]].pb(v[i]);
RE(i,n) {
RE(i,n) path[i] = -1;
res[i] = winner(i);
}
return res;
}
