Submission #750734

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
750734	2023-05-30 08:37:52	Error42	Stations (IOI20_stations)	C++17	100 / 100	942 ms	920 KiB

stations

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#include "stations.h"
#include <algorithm>
#include <vector>
using namespace std;
int dfs(
  vector<vector<int>> const& graph,
  vector<int>& label,
  int const cur,
  int start,
  bool const left,
  int const par
) {
  int sz = 1;
  if (left) {
    label[cur] = start;
    start++;
  }
  for (int const neigh : graph[cur]) {
    if (neigh == par)
      continue;
    int const neigh_sz = dfs(graph, label, neigh, start, !left, cur);
    sz += neigh_sz;
    start += neigh_sz;
 
 
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Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:61:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |   for (int i = 0; i < c.size() - 1; i++)
      |                   ~~^~~~~~~~~~~~~~
stations.cpp:73:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |   for (int i = 0; i < c.size() - 1; i++)
      |                   ~~^~~~~~~~~~~~~~

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