Submission #601926

#	Time	Username	Problem	Language	Result	Execution time	Memory
601926		definitelynotmee	Stations (IOI20_stations)	C++17	0 / 100	865 ms	632 KiB

stations

#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define all(x) x.begin(), x.end()
using ll = long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
template<typename T>
using matrix = vector<vector<T>>;

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
    matrix<int> g(n);
    for(int i = 0; i < n-1; i++){
        g[u[i]].push_back(v[i]);
        g[v[i]].push_back(u[i]);
    }
    int timer = -1;
    vector<int> labels(n);
	auto dfs =[&](int id, int last, auto dfs)->void{
        labels[id] = ++timer;
        for(int i : g[id]){
            if(i!=last)
                dfs(i,id,dfs);
        }
    };
    dfs(0,0,dfs);
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	int id = upper_bound(all(c),t)-c.begin();
    if(id > 0)
        id--;
    return c[id];
}

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