Submission #321930

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
321930	2020-11-13 14:02:35	demetre	Stations (IOI20_stations)	C++14	100 / 100	1097 ms	1248 KiB

stations

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#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
int fix[1005],timer;
vector<int> V[1005],labels;
void dfs(int u,int d){
  fix[u]=1;
  if(d%2==0) timer++,labels[u]=timer;
  for(int i=0;i<V[u].size();i++){
    if(!fix[V[u][i]]){
      dfs(V[u][i],d+1);
    }
  }
  if(d%2!=0){
    timer++;
    labels[u]=timer;
  }
}
 
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
  labels.clear();
  labels.resize(n);
  for(int i=0;i<n;i++){
    V[i].clear();
    fix[i]=0;
  }
  for (int i = 0; i < u.size(); i++) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

stations.cpp: In function 'void dfs(int, int)':
stations.cpp:12:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |  for(int i=0;i<V[u].size();i++){
      |              ~^~~~~~~~~~~~
stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:30:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |  for (int i = 0; i < u.size(); i++) {
      |                  ~~^~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:45:17: 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=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