Submission #1035622

#	Time	Username	Problem	Language	Result	Execution time	Memory
1035622		Mr_Husanboy	Stations (IOI20_stations)	C++17	0 / 100	638 ms	696 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define all(a) (a).begin(), (a).end()
#define ff first
#define ss second

template<typename T>
int len(T &a){return a.size();}

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());


vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector<vector<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]);
	}
	vector<int> tout(n);

	int tim = 0;

	auto dfs = [&](auto &dfs, int i, int p = -1)->void{
		for(auto u : g[i]){
			if(u == p) continue;
			dfs(dfs, u, i);
		}
		tout[i] = tim ++;
	};	
	dfs(dfs, 0);
	return tout;
}

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

	if(s < t){
		return c.back();
	}
	while(c.back() > s) c.pop_back();
	for(int i = 1; i < len(c); i ++){
		if(c[i - 1] < t && t <= c[i]){
			return c[i];
		}
	}
	return c[0];
}

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