Submission #321905

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
321905	2020-11-13 13:55:40	wildturtle	Stations (IOI20_stations)	C++14	100 / 100	1220 ms	24668 KiB

stations

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
int A[500005],l,in[500005],out[500005],don[500005],mp[500005];
vector <int> v1[500005];
vector <int> labels;
void dfs(int x,int y,int z) {
    l++; 
    in[x]=l;
    don[x]=z;
    for(int i=0;i<v1[x].size();i++) {
        if(v1[x][i]==y) continue;
        dfs(v1[x][i],x,z+1);
    }
    l++;
    out[x]=l;
}
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++) {
  v1[i].clear();
  }
    l=0;
  for(int i=0;i<n-1;i++) {
      v1[u[i]].push_back(v[i]);
      v1[v[i]].push_back(u[i]);
  }
  dfs(0,-1,0);
  for(int i=0;i<n;i++) {
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

stations.cpp: In function 'void dfs(int, int, int)':
stations.cpp:11:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int i=0;i<v1[x].size();i++) {
      |                 ~^~~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:46:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for(int i=0;i<c.size()-1;i++) {
      |                     ~^~~~~~~~~~~
stations.cpp:55:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for(int i=0;i<c.size();i++) {
      |                     ~^~~~~~~~~
stations.cpp:56:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |             if(i==c.size()-1) {
      |                ~^~~~~~~~~~~~

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