Submission #1296101

#	Time	Username	Problem	Language	Result	Execution time	Memory
1296101		kawhiet	Stations (IOI20_stations)	C++20	0 / 100	3060 ms	512 KiB

stations

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

vector<int> a;
vector<vector<int>> g;

void dfs(int u, int p) {
	a.push_back(u);
	for (auto v : g[u]) {
		if (v != p) {
			dfs(v, u);
		}
	}
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	g.assign(n, {});
	for (int i = 0; i < n - 1; i++) {
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
	}
	for (int i = 0; i < n; i++) {
		if (g[i].size() == 1) {
			dfs(i, -1);
			break;
		}
	}
	if (a.size() != n) {
		for (;;);
	}
	vector<int> labels(n);
	for (int i = 0; i < n; i++) {
		labels[i] = a[i];
		// labels[a[i]] = i;
	}
	return labels;
}

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

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