#include <bits/stdc++.h>
#include "train.h"
using namespace std;
using pii = pair<int, int>;
const int N = 5e3+10;
int n, m;
int deg[N];
vector<int> R[N];
bool used[N*N];
int cnt[N*N];
vector<int> who_wins(vector<int> A, vector<int> C, vector<int> U, vector<int> V)
{
// input
n = A.size();
m = U.size();
for (int i = 0; i < m; ++i) {
++deg[U[i]];
R[V[i]].push_back(U[i]);
}
// winning position for B
queue<int> Q;
for (int i = 0; i < n; ++i) {
int vali = i*(n+1);
used[vali] = true;
Q.push(i*(n+1)+0);
}
vector<int> ans(n, 1);
while (!Q.empty()) {
int valu = Q.front();
int u = valu/(n+1), p = valu%(n+1);
Q.pop();
if (p == n) ans[u] = 0;
if (!C[u] && p+1 <= n) for (auto v : R[u]) {
int np = p+1;
if (C[v] && np != n) continue;
int valv = v*(n+1)+np;
++cnt[valv];
if (cnt[valv] == (A[v] ? (int)deg[v] : 1) && !used[valv]) {
used[valv] = true;
Q.push(valv);
}
}
if (C[u] && p == n) for (auto v : R[u]) {
if (C[v]) {
int np = n;
int valv = v*(n+1)+np;
++cnt[valv];
if (cnt[valv] == (A[v] ? (int)deg[v] : 1) && !used[valv]) {
used[valv] = true;
Q.push(valv);
}
} else for (int np = 1; np <= n; ++np) {
int valv = v*(n+1)+np;
++cnt[valv];
if (cnt[valv] == (A[v] ? (int)deg[v] : 1) && !used[valv]) {
used[valv] = true;
Q.push(valv);
}
}
}
}
return ans;
}
