Submission #396254

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
396254	2021-04-29 15:42:42	faresbasbs	Stations (IOI20_stations)	C++14	100 / 100	1124 ms	844 KiB

stations

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#include <bits/stdc++.h>
#include "stations.h"
using namespace std;
void dfs(int curr , int par , int hi , vector<vector<int>> &graph , int &cnt , vector<int> &ret){
  if(hi%2 == 0){
    ret[curr] = cnt;
    cnt += 1;
  }
  for(auto i : graph[curr]){
    if(i == par){
      continue;
    }
    dfs(i,curr,hi+1,graph,cnt,ret);
  }
  if(hi%2 == 1){
    ret[curr] = cnt;
    cnt += 1;
  }
}
vector<int> label(int n , int k , vector<int> u , vector<int> v){
  vector<vector<int>> graph(1001);
  int cnt = 0;
  for(int i = 0 ; i < u.size() ; i += 1){
    graph[u[i]].push_back(v[i]);
    graph[v[i]].push_back(u[i]);
  }
  vector<int> labels(n);
  dfs(0,0,0,graph,cnt,labels);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for(int i = 0 ; i < u.size() ; i += 1){
      |                  ~~^~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |    for(int i = 0 ; i < c.size() ; i += 1){
      |                    ~~^~~~~~~~~~

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