Submission #320506

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
320506	2020-11-08 22:13:58	Ambok	Stations (IOI20_stations)	C++14	100 / 100	1002 ms	1376 KiB

stations

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#include <bits/stdc++.h>
#include "stations.h"
using namespace std;
int coun=0; 
vector < vector <int> > vec(2000);
vector <int> L(2000);
void dfs (int x, int y, int h)
  {
    if (h%2==0) L[x]=coun;
    coun++;
    for (int i=0; i<vec[x].size(); i++)
    {
      if (vec[x][i]==y) continue;
      dfs(vec[x][i], x, h+1);
    }
    if (h%2==1) L[x]=coun;
    h--; coun++;
  }
vector <int> label(int n, int k, vector <int> u, vector <int> v)
{
  int s, h, i;
  L.resize(n);
  vec.resize(n);
  
  for (i=0; i<n; i++)
  {
    vec[i].clear();
  }
  
  for (i=0; i<n-1; i++)
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

stations.cpp: In function 'void dfs(int, int, int)':
stations.cpp:11:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |   for (int i=0; i<vec[x].size(); i++)
      |                 ~^~~~~~~~~~~~~~
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:21:6: warning: unused variable 's' [-Wunused-variable]
   21 |  int s, h, i;
      |      ^
stations.cpp:21:9: warning: unused variable 'h' [-Wunused-variable]
   21 |  int s, h, i;
      |         ^

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