This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr ll INF = 1000000000000000000LL;
ll n, m, q, k, x, y, a, c;
vector<ll> G[5000];
vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
n = a.size();
m = u.size();
queue<ll> q;
vector<ll> cnt(n);
vector<int> vis(n);
for (int i = 0; i < n; i++) {
G[i].clear();
}
for (int i = 0; i < m; i++) {
cnt[u[i]]++;
G[v[i]].push_back(u[i]);
}
for (int i = 0; i < n; i++) {
if (r[i]) {
q.push(i);
}
}
while (!q.empty()) {
ll x = q.front();
q.pop();
if (vis[x]) {
continue;
}
vis[x] = 1;
for (auto i : G[x]) {
if (a[i] && !vis[i]) {
q.push(i);
}
if (!a[i]) {
cnt[i]--;
if (cnt[i] == 0 && !vis[i]) {
q.push(i);
}
}
}
}
return vis;
}
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