Submission #117722

#	Time	Username	Problem	Language	Result	Execution time	Memory
117722		Plurm	Toy Train (IOI17_train)	C++14	0 / 100	267 ms	262144 KiB

train

#include "train.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> g[5005];
bool loop[5005];
bool rech[5005];
bool dfs(int u){
    if(g[u].empty()) return loop[u] && rech[u];
    for(int x : g[u]) if(dfs(x)) return true;
    return loop[u] && rech[u];
}
vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
    // Subtask 1
    int m = u.size();
    for(int i = 0; i < m; i++){
        if(u[i] == v[i]) loop[u[i]] = true;
        else g[u[i]].push_back(v[i]);
    }
    int n = a.size();
    for(int i = 0; i < n; i++){
        rech[i] = r[i] != 0;
    }
    vector<int> res;
    for(int i = 0; i < n; i++){
        res.push_back(dfs(i));
    }
	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