Submission #985344

#	Time	Username	Problem	Language	Result	Execution time	Memory
985344		Maaxle	Stations (IOI20_stations)	C++17	0 / 100	538 ms	864 KiB

stations

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

#define range(it, a, b) for (ll it = a; it < b; it++)
#define all(x) begin(x), end(x)
#define ll long long
#define ull unsigned long long
#define INF64 ((ll) 1 << 62)
#define INF32 (1 << 30)
#define mset multiset
#define uset unordered_set
#define umap unordered_map 
#define pqueue priority_queue 
#define ptr(A) shared_ptr<A>

using namespace std;

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

	range(i, 0, n-1) {
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}

	int l;
	range(i, 0, n) {
		if (adj[i].size() == 1) {
			l = i;
			break;
		}
	}

	vector<int> ans (n);
	int prev = l;
	range(i, 0, n) {
		ans[l] = i;
		for (int& k : adj[l]) {
			if (k != prev) {
				l = k;
				prev = l;
				break;
			}
		}
	}
	return ans;
}
		

int find_next_station(int s, int t, vector<int> c) {
	if (t > s)
		return s+1;
	return s-1;
}

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:37:8: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized]
   37 |   ans[l] = i;
      |        ^

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