Submission #305252

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
305252	2020-09-22 19:28:52	oscarsierra12	Stations (IOI20_stations)	C++14	100 / 100	1095 ms	1240 KiB

stations

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std ;
const int N = 1010 ;
int dfsNum[N];
int cnt = 0 ;
vector <int> G[N] ;
void dfs ( int u, int p, int f ) {
    if ( f ) dfsNum[u] = cnt++ ;
    for ( auto v:G[u] ) if ( v!=p ) dfs (v, u, 1-f) ;
    if ( !f ) dfsNum[u] = cnt++ ;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
  std::vector<int> labels(n);
  for ( int i = 0 ; i < n ; ++i ) G[i].clear() ;
  cnt = 0 ;
  for ( int i = 0 ; i + 1 < n ; ++i ) {
        G[u[i]].push_back ( v[i] ) ;
        G[v[i]].push_back ( u[i] ) ;
  }
    dfs ( 0, -1, 0 ) ;
  for (int i = 0; i < n; i++) {
    labels[i] = dfsNum[i];
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:45:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |     for ( int i = 1 ; i < c.size() ; ++i )
      |                       ~~^~~~~~~~~~
stations.cpp:45:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   45 |     for ( int i = 1 ; i < c.size() ; ++i )
      |     ^~~
stations.cpp:47:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   47 |  return c.back();
      |  ^~~~~~

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