#include "train.h"
#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define rep2(i, a, b) for (int i = (int)(a); i < (int)(b); ++i)
#define rrep(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define rrep2(i, a, b) for (int i = (int)(b) - 1; i >= (int)(a); --i)
#define all(v) begin(v), end(v)
using namespace std;
template<class T, class U> bool chmin(T& a, const U& b) { return a > b ? a = b, true : false; }
template<class T, class U> bool chmax(T& a, const U& b) { return a < b ? a = b, true : false; }
using ll = long long;
std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
vector<int> ids(a.size()); iota(all(ids), 0);
vector<int> ans(a.size());
while (true) {
int n = a.size(), m = u.size();
vector<vector<int>> g(n), rg(n);
rep (i, m) {
g[u[i]].push_back(v[i]);
rg[v[i]].push_back(u[i]);
}
auto calc = [&](vector<int> r, bool f) -> vector<int> {
queue<int> que;
rep (i, n) {
if (r[i]) que.push(i);
}
vector<int> deg(n);
rep (i, n) deg[i] = g[i].size();
while (!que.empty()) {
int i = que.front(); que.pop();
for (int j : rg[i]) {
if (r[j]) continue;
if (a[j] == f) {
r[j] = true;
}
else {
if ((--deg[j]) == 0) {
r[j] = true;
}
}
if (r[j]) que.push(j);
}
}
return r;
};
auto r2 = calc(r, 1);
if (count(all(r2), 1) == n) {
rep (i, n) ans[ids[i]] = 1;
break;
}
rep (i, n) r2[i] ^= 1;
auto r3 = calc(r2, 0);
vector<int> idx(n, -1);
vector<int> ids2;
int cnt = 0;
rep (i, n) {
if (!r3[i]) {
idx[i] = cnt++;
ids2.push_back(ids[i]);
}
}
vector<int> a2(cnt), r4(cnt);
rep (i, n) {
if (idx[i] == -1) continue;
a2[idx[i]] = a[i];
r4[idx[i]] = r[i];
}
vector<int> u2, v2;
rep (i, m) {
if (idx[u[i]] == -1 || idx[v[i]] == -1) continue;
u2.push_back(idx[u[i]]);
v2.push_back(idx[v[i]]);
}
rep (i, n) {
if (idx[i] == -1) ans[ids[i]] = 0;
}
a = a2;
r = r4;
u = u2;
v = v2;
ids = ids2;
}
return ans;
}
