Submission #706506

#	Time	Username	Problem	Language	Result	Execution time	Memory
706506		rafatoa	Stations (IOI20_stations)	C++17	0 / 100	901 ms	760 KiB

stations

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

vector<int> label(int n, int k, vector<int> u, vector<int> v){
    vector<int> l(n);
    vector<vector<int>> adj(n);
    for(int i=0; i<n-1; i++){
        adj[u[i]].push_back(v[i]);
        adj[v[i]].push_back(u[i]);
    }

    int aux = 0;
    function<void(int, int)> dfs = [&](int s, int e){
        l[s] = aux++;
        for(auto u:adj[s])
            if(u != e) dfs(u, s);
    };
    dfs(0, -1);
    return l;
}

int find_next_station(int s, int t, vector<int> c){
    if(t < s){
        for(auto &x:c)
            if(x < s) return x;
    } else {
        int bst = 0;
        for(auto &x:c)
            if(x <= t) bst = max(bst, x);
        return bst;
    }
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type]
   32 | }
      | ^

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