Submission #954952

#	Time	Username	Problem	Language	Result	Execution time	Memory
954952		irmuun	Stations (IOI20_stations)	C++17	5 / 100	593 ms	1192 KiB

stations

#include<bits/stdc++.h>
#include "stations.h"
 
using namespace std;
 
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

vector<int>label(int n,int k,vector<int>u,vector<int>v){
    vector<int>l(n);
    vector<int>adj[n];
    for(int i=0;i<n-1;i++){
        adj[u[i]].pb(v[i]);
        adj[v[i]].pb(u[i]);
    }
    vector<int>ord;
    function <void(int,int)> dfs=[&](int x,int p){
        ord.pb(x);
        for(auto y:adj[x]){
            if(y!=p){
                dfs(y,x);
            }
        }
    };
    for(int i=0;i<n;i++){
        if(adj[i].size()==1){
            dfs(i,-1);
            break;
        }
    }
    for(int i=0;i<n;i++){
        l[ord[i]]=i;
    }
    return l;
}

int find_next_station(int s,int t,vector<int>c){
    if(t<s) 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