Submission #622839

#	Time	Username	Problem	Language	Result	Execution time	Memory
622839		yanndev	Stations (IOI20_stations)	C++17	0 / 100	4 ms	452 KiB

stations

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

const int MX = 1042;

int lab[MX];
vector<int> adj[MX];

void dfs(int node, int par, int id) {
	lab[node] = id;
	for (auto& x: adj[node])
		if (x != par)
			dfs(x, node, id + 1);
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector<int> labels(n);

	for (int i = 0; i + 1 < n; i++) {
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}

	int start = 0;
	for (int i = 0; i < n; i++)
		if ((int)adj[i].size() == 1)
			start = i;

	for (int i = 0; i < n; i++)
		labels[i] = lab[i];
	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	sort(c.begin(), c.end());
	if (s < t)
		return c[1];
	return c[0];
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:25:6: warning: variable 'start' set but not used [-Wunused-but-set-variable]
   25 |  int start = 0;
      |      ^~~~~

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