| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 761350 | minhcool | Toy Train (IOI17_train) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#define local
#ifndef local
#include "train.h"
#endif
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
//#define int long long
#define fi first
#define se second
#define pb push_back
#define mp make_pair
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
const int N = 3e5 + 5;
const int oo = 1e18 + 7, mod = 1e9 + 7;
int n, a[N];
mt19937 rng(1);
int rnd(int l, int r){
int temp = rng() % (r - l + 1);
return abs(temp) + l;
}
vector<int> Adj[N];
bool out[N];
int deg[N];
vector<int> who_wins(vector<int> a, vector<int> r, vector<int> U, vector<int> V){
n = a.size();
for(int i = 0; i < U.size(); i++){
Adj[V[i]].pb(U[i]);
//Adj[U[i]].pb(V[i]);
}
while(1){
vector<bool> vis(n + 1);
for(int i = 0; i < n; i++){
if(out[i]) continue;
vis[i] = r[i];
deg[i] = 0;
}
queue<int> q;
for(int i = 0; i < n; i++){
if(out[i]) continue;
if(r[i]) q.push(i);
}
while(!q.empty()){
int u = q.front();
// cout << u << "\n";
vis[u] = 1;
q.pop();
for(auto v : Adj[u]){
if(r[v]) continue;
if(out[v]) continue;
deg[v]++;
if(a[v] == 1 && deg[v] == 1) q.push(v);
if(a[v] == 0 && deg[v] == Adj[v].size()) q.push(v);
}
//vis[u] = 1;
//for(auto v : Adj[u]){
// if(vis[v] || out[v]) continue;
// q.push(v);
//}
}
//cout << "\n";
for(int i = 0; i < n; i++){
if(out[i]) continue;
if(!vis[i]) q.push(i);
vis[i] = deg[i] = 0;
}
while(!q.empty()){
int u = q.front();
// cout << "OK " << u << "\n";
vis[u] = 1;
q.pop();
for(auto v : Adj[u]){
if(r[v]) continue;
if(out[v]) continue;
deg[v]++;
if(a[v] == 0 && deg[v] == 1) q.push(v);
if(a[v] == 1 && deg[v] == Adj[v].size()) q.push(v);
}
}
//exit(0);
int cnt = 0;
for(int i = 0; i < n; i++){
if(out[i] || !vis[i]) continue;
out[i] = 1;
cnt++;
}
if(!cnt) break;
}
vector<int> ans;
for(int i = 0; i < n; i++) ans.pb(!out[i]);
return ans;
}
//#define local
#ifdef local
void process(){
int n, m;
cin >> n >> m;
vector<int> v1, v2;
v1.resize(n), v2.resize(n);
vector<int> v3, v4;
for(int i = 0; i < n; i++) cin >> v1[i];
for(int i = 0; i < n; i++) cin >> v2[i];
for(int i = 0; i < m; i++){
int x, y;
cin >> x >> y;
v3.pb(x), v4.pb(y);
}
vector<int> v = who_wins(v1, v2, v3, v4);
for(int i = 0; i < n; i++) cout << v[i] << " ";
cout << "\n";
}
signed main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
process();
}
#endif