Submission #1189355

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189355		hamzabc	Stations (IOI20_stations)	C++20	0 / 100	303 ms	580 KiB

stations

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


using namespace std;


int timer;
std::vector<std::vector<int>> graph;
std::vector<int> labels;


void dfs(int a, int p){
	labels[a] = timer;
	timer--;
	for (auto go : graph[a]){
		if (go == p)
			continue;
		dfs(go, a);
	}
}


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

int find_next_station(int s, int t, std::vector<int> c) {
	int ret = INT_MAX;
	int mx = -1;
	for (int i : c){
		if (i < t){
			mx = std::max(mx, i);
			continue;
		}
		ret = std::min(ret, i);
	}
	if (ret == INT_MAX)
		return mx;
	return ret;
}

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