Submission #578521

#	Time	Username	Problem	Language	Result	Execution time	Memory
578521		Vanilla	Stations (IOI20_stations)	C++17	0 / 100	981 ms	544 KiB

stations

#include <bits/stdc++.h>
#include "stations.h"
using namespace std;
const int maxn = 1002;
vector <int> ad [maxn];
int ct = 0;

void dfs (int u, int p, vector <int> &lb) {
	lb[u] = ct++;
	for (int v: ad[u]) {
		if (v == p) continue;
		dfs(v, u, lb);
	}
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector<int> labels(n);
	ct = 0;
	for (int i = 0; i < n; i++){
		ad[i].clear();
	}
	for (int i = 0; i < n - 1; i++){
		ad[u[i]].push_back(v[i]);
		ad[v[i]].push_back(u[i]);
	}
	dfs(0, -1, labels);
	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	if (t <= c[0]) return c[0];
	for (int i = 1; i < c.size(); i++){
		if (c[i] == t) return c[i];
		if (c[i] > t) return c[i-1];
	}
	return -1;
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |  for (int i = 1; i < c.size(); i++){
      |                  ~~^~~~~~~~~~

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