Submission #1147878

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147878		FaresSTH	Stations (IOI20_stations)	C++20	5 / 100	299 ms	532 KiB

stations

#include "bits/stdc++.h"
using namespace std;
#define mp make_pair
#define S second
#define F first
vector<int> adj[1000];
int dt[1000], t;

void dfs(int i) {
    dt[i] = ++t;
    for (int j : adj[i]) {
        if (dt[j]) continue;
        dfs(j);
    }
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    for (int i = 0; i < n - 1; i++) {
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }
    int rt; for (int i = 0; i < n; i++) if (adj[i].size() == 1) rt = i;
    dfs(rt); vector<int> res;
    for (int i = 0; i < n; i++) {
        res.push_back(dt[i] - 1);
        adj[i].clear();
        dt[i] = 0;
        t = 0;
    }
    return res;
}

int find_next_station(int s, int t, vector<int> c) {
   if (s > t) return c[0];
   return c.back();
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61