Submission #1060191

#	Time	Username	Problem	Language	Result	Execution time	Memory
1060191		Zicrus	Toy Train (IOI17_train)	C++17	5 / 100	6 ms	1372 KiB

train

#include <bits/stdc++.h>
#include "train.h"
using namespace std;

typedef long long ll;

vector<vector<ll>> adj;

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
    ll n = a.size(), m = u.size();
	vector<int> res(n);
	adj = vector<vector<ll>>(n);
    for (int i = 0; i < m; i++) {
        adj[u[i]].push_back(v[i]);
    }

    for (int i = n-1; i >= 0; i--) {
        bool win = false;
        if (a[i]) {
            for (auto &e : adj[i]) {
                if (e != i && res[e]) win = true;
                if (e == i && r[i]) win = true;
            }
            res[i] = win;
        }
        else {
            for (auto &e : adj[i]) {
                if (e != i && !res[e]) win = true;
                if (e == i && !r[i]) win = true;
            }
            res[i] = !win;
        }
    }

	return res;
}

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