Submission #1210277

#	Time	Username	Problem	Language	Result	Execution time	Memory
1210277		pera	Stations (IOI20_stations)	C++20	0 / 100	308 ms	580 KiB

stations

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


std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	std::vector<int> labels(n);
	vector<vector<int>> g(n);
   for(int i = 0;i < n - 1;i ++){
      g[u[i]].emplace_back(v[i]);
      g[v[i]].emplace_back(u[i]);
   }
   int timer = -1;
   vector<int> in(n) , out(n);
   function<void(int , int)> dfs = [&](int u , int p){
      in[u] = ++timer;
      for(int v : g[u]){
         if(v != p){
            dfs(v , u);
         }
      }
      out[u] = timer;
   };
   dfs(0 , 0);
   for(int i = 0;i < n;i ++){
      labels[i] = in[i];
   }
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
   c.emplace_back(1E9);
   for(int i = 1;i < (int)c.size() - 1;i ++){
      if(c[i] <= t && t < c[i + 1]){
         return c[i];
      }
   }
   return c[0];
}

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