Submission #1092889

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092889		huyngo	Stations (IOI20_stations)	C++17	0 / 100	608 ms	684 KiB

stations

#include "stations.h"
#include<bits/stdc++.h>
using namespace std;

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	std::vector<int> labels(n);
	vector<vector<int>> adj(n);
	for (int i = 0; i < n - 1; ++i) {
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	for (int i = 0; i < n; ++i)
		sort(adj[i].begin(), adj[i].end());
	int dtime = -1;
	auto dfs = [&](auto self, int u, int p) -> void {
		labels[u] = ++dtime;
		for (int v : adj[u]) if (v != p) {
			self(self, v, u);
		}
		};
	dfs(dfs, 0, -1);
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	if (t < s)
		return *min_element(c.begin(), c.end());
	int id = upper_bound(c.begin(), c.end(), t) - c.begin() - 1;
	return c[id];
}

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