Submission #781009

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
781009	2023-07-12 15:35:44	Josia	Stations (IOI20_stations)	C++17	100 / 100	749 ms	824 KiB

stations

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#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> pre;
vector<int> post;
vector<vector<int>> graph;
vector<int> depth;
int tim;
void dfs(int v, int d) {
  if (pre[v] != -1) return;
  pre[v] = tim++;
  depth[v] = d;
  for (int i: graph[v]) {
    dfs(i, d+1);
  }
  post[v] = tim++;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
  tim = 0;
  pre.assign(n, -1);
  post.assign(n, -1);
  depth.assign(n, -1);
 
 
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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:46:9: warning: unused variable 'mod' [-Wunused-variable]
   46 |     int mod = labels[0]%2;
      |         ^~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:85:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |         for (int i = 1; i<c.size(); i++) {
      |                         ~^~~~~~~~~
stations.cpp:95:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |         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