Submission #408596

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
408596	2021-05-19 08:49:26	muhammad_hokimiyon	Stations (IOI20_stations)	C++14	Compilation error	0 ms	0 KiB

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#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
 
const int MAXN = 1e3 + 7;
 
void dfs( vector<vector<int>> adj, int v, int p, vector<int> lb, int &cnt ) {
  lb[v] = cnt++;
  for ( auto u: adj[v] ) {
    if ( u != p ) {
      dfs( adj, u, v, lb, cnt );
    }
  }
  if ( p != -1 ) {
    lb[v] *= 1000;
    lb[v] += cnt - 1;
  }
  else {
    lb[v] *= 1000;
    lb[v]++;
  }
}
 
 
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
  vector<vector<int>> adj(n + 7);
  for ( int i = 0; i < n - 1; i++ ) {
    adj[ u[i] ].push_back( v[i] );
    adj[ v[i] ].push_back( u[i] );
  }
 
 
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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:38:2: error: 'cnt' was not declared in this scope; did you mean 'int'?
   38 |  cnt = 0;
      |  ^~~
      |  int