Submission #955080

#	Time	Username	Problem	Language	Result	Execution time	Memory
955080		Trisanu_Das	Stations (IOI20_stations)	C++17	69.87 / 100	623 ms	1672 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> vals;
int t = 0;
void dfs(vector<vector<int>> &adj, int node, int p, int f)
{
	if(f)vals[node] = t++;
	for (auto a : adj[node])
	{
		if (a != p)
			dfs(adj, a, node, !f);
	}
	if(!f)vals[node] = t++;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v)
{
	vector<vector<int>> adj(n + 1);
	for (int i = 0; i < n - 1; i++)
	{
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	vals.resize(n, 0);
	dfs(adj, 0, -1, 1);
	return vals;
}
 
int find_next_station(int s, int t, vector<int> c)
{
	
	if (c.back() < s) reverse(c.begin(), c.end());
	for (int x: c) if (min(s, x) <= t && t <= max(s, x)) return x;
	return c.back();
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 43.868 / 61