제출 #969297

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
969297		mariaclara	장난감 기차 (IOI17_train)	C++17	0 / 100	8 ms	1372 KiB

train

#include "train.h"
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll,ll> pii;
const int INF = 1e9+10;
const ll LINF = 1e18+10;
#define all(x) x.begin(), x.end()
#define sz(x) x.size()
#define mk make_pair
#define pb push_back
#define f first 
#define s second

int t;
bool vis[5005], in_dfs[5005];
vector<int> edges[5005];

bool dfs(int x) {
	in_dfs[x] = 1;
	vis[x] = 1;

	for(auto viz : edges[x]) {
		if(vis[viz] and in_dfs[viz]) return 1;
		else if(vis[viz]) continue;
		if(dfs(viz)) return 1;
	}

	in_dfs[x] = 0;
	return 0;
}

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
	int n = sz(a), m = sz(u);
	vector<int> res(n);

	for(int i = 0; i < m; i++) edges[v[i]].pb(u[i]);

	queue<int> fila;

	for(int i = 0; i < n; i++) {
		if(r[i]) {
			memset(vis, 0, sizeof(vis));
			memset(in_dfs, 0, sizeof(in_dfs));
			if(dfs(i)) fila.push(i);
		}
	}

	while(!fila.empty()) {
		int x = fila.front();
		fila.pop();
 
		if(res[x]) continue;
		res[x] = 1;
 
		for(auto viz : edges[x])
			fila.push(viz);
	}
	
	return res;
}

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