Submission #422040

#	Time	Username	Problem	Language	Result	Execution time	Memory
422040		Monchito	Stations (IOI20_stations)	C++14	5 / 100	1124 ms	740 KiB

stations

#include "stations.h"
#include <vector>
#include <iostream>
using namespace std;
using vi = vector<int>;
using vvi = vector<vi>;

int find_leaf(int current_node, int current_node_father, vvi& G){
    vector<int> adjacents;
    for(int v : G[current_node]){
        if(v == current_node_father) continue;
        adjacents.push_back(v);
    }

    if(adjacents.empty()) return current_node;
    return find_leaf(adjacents[0], current_node, G);
}

void find_order(int& current_id, int current_node, int current_node_father, vvi& G, vi& labels){
    labels[current_node] = current_id;
    current_id++;

    for(int v : G[current_node]){
        if(v == current_node_father) continue;
        find_order(current_id, v, current_node, G, labels);
    }
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
    vi labels(n);
    vvi G(n);
    int id=0, root = 0;

    for(int i=0; i<n-1; i++){
        G[u[i]].push_back(v[i]);
        G[v[i]].push_back(u[i]);
    }

    find_order(id, find_leaf(root, -1, G), -1, G, labels);
    return labels;
}

int find_next_station(int s, int t, vector<int> c) {
    if((int)c.size() == 1) return c[0];
    if(s > t) return c[0];
    return c[1];
}

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