Submission #790125

#	Time	Username	Problem	Language	Result	Execution time	Memory
790125		fatemetmhr	Toy Train (IOI17_train)	C++17	11 / 100	1070 ms	25672 KiB

train

//  ~ Be Name Khoda ~  //
 
#include "train.h"
#include <bits/stdc++.h>
//#pragma GCC optimize ("O3")
//#pragma GCC target("avx2")
//#pragma GCC optimize("unroll-loops,Ofast")
 
using namespace std;
 
typedef long long ll;
 
#define pb       push_back
#define mp       make_pair
#define all(x)   x.begin(), x.end()
#define fi       first
#define se       second
 
const int maxn  =  1e6   + 10;
const int maxn5 =  5e5   + 10;
const int maxnt =  1.2e6 + 10;
const int maxn3 =  1e3   + 10;
const int mod   =  1e9   + 7;
const ll  inf   =  1e18;
 
int cnt[maxn5], cmp[maxn5];
int num = 0;
vector <int> adj[maxn5], jda[maxn5], ver;
bool mark[maxn5], loop[maxn5], good[maxn5], rem[maxn5];
 
void dfs1(int v){
	mark[v] = true;
	for(auto u : adj[v]) if(!mark[u] && !rem[u])
		dfs1(u);
	ver.pb(v);
}
 
void dfs2(int v){
	mark[v] = true;
	cmp[v] = num;
	cnt[num]++;
	for(auto u : jda[v]) if(!mark[u] && !rem[u])
		dfs2(u);
 
}
 
std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
	int n = a.size(), m = u.size();
	for(int i = 0; i < m; i++){
		adj[u[i]].pb(v[i]);
		jda[v[i]].pb(u[i]);
		if(u[i] == v[i])
			loop[u[i]] = true;
	}
	for(int i = 0; i < n; i++) if(r[i])
		rem[i] = true;
 
	for(int i = 0; i < n; i++) if(!mark[i] && !rem[i])
		dfs1(i);
	reverse(all(ver));
	memset(mark, false, sizeof mark);
	for(auto u : ver) if(!mark[u] && !rem[u]){
		dfs2(u);
		num++;
	}
	for(int i = 0; i < n; i++) if(!rem[i] && (loop[i] || cnt[cmp[i]] > 1))
		good[i] = true;
	vector <int> ans;
	for(int i = 0; i < n; i++) if(r[i])
		rem[i] = false;
	for(int i = 0; i < n; i++){
		memset(mark, false, sizeof mark);
		ver.clear();
		dfs1(i);
		bool re = true;
		for(int j = 0; j < n; j++) if(good[j] && mark[j])
			re = false;
		ans.pb(re);
	}
	return ans;
 
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 11 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51