Submission #432732

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
432732	2021-06-18 12:55:13	Hazem	Stations (IOI20_stations)	C++14	10 / 100	971 ms	856 KiB

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#include "stations.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;
const int N = 2e3;
int cnt = 0;
int dfs(int i,int pre,vector<int> &ret,vector<int> adj[]){
  int mx = cnt;
  ret[i] = cnt++;
  
  for(int j=0;j<adj[i].size();j++){
    int v = adj[i][j];
    if(v==pre)continue;
    mx = max(mx,dfs(v,i,ret,adj));
  }
  ret[i] |= mx<<10;
  return mx;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
  
  vector<int>adj[N];
  for(int i=0;i<n-1;i++){
    adj[u[i]].push_back(v[i]);
    adj[v[i]].push_back(u[i]);
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

stations.cpp: In function 'int dfs(int, int, std::vector<int>&, std::vector<int>*)':
stations.cpp:15:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int j=0;j<adj[i].size();j++){
      |              ~^~~~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:59:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |  for(int i=1;i<c.size();i++)
      |              ~^~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 10 / 10
• Subtask 5: 0 / 61