oj.uz

Submission #473315

# Submission time Handle Problem Language Result Execution time Memory
473315 2021-09-15T12:01:09 Z ZaZo_ Paths (BOI18_paths) C++14
23 / 100
 3000 ms 127992 KB 
#include <bits/stdc++.h>
#define ZAZO ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define int long long
using namespace std;
int n , m , k;
int cols[300001],vis[300001];
vector<int>edges[300001];
set<vector<int>>ans;
void dfs(int node,set<int>path,vector<int>path2,int par)
{
  if(path2.size()==0){
  path2.push_back(node);
  path.insert(cols[node]);
  }
  for(int i = 0 ; i < edges[node].size() ; i++)
  {
    if(edges[node][i]!=par && !path.count(cols[edges[node][i]])&&path.size()<k ){
      path.insert(cols[edges[node][i]]);
      path2.push_back(edges[node][i]);
      ans.insert(path2);
      dfs(edges[node][i] , path , path2 , node);
      path2.erase(path2.begin()+(path2.size()-1));
      path.erase(cols[edges[node][i]]);
    }
  }
}
int32_t main() {
  ZAZO
  cin >> n >> m >> k ;
  for(int i = 1 ; i <= n ; i++)
  {
    cin>>cols[i];
  }
  for(int i = 0 ; i < m ; i++)
  {
    int u , v;
    cin >> u >> v;
    edges[u].push_back(v);
    edges[v].push_back(u);
  }
  for(int i = 1 ; i <= n ; i++)
  {
    dfs(i,{},{},-1);
  }
  cout<<ans.size()<<endl;
}

Compilation message

paths.cpp: In function 'void dfs(long long int, std::set<long long int>, std::vector<long long int>, long long int)':
paths.cpp:15:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |   for(int i = 0 ; i < edges[node].size() ; i++)
      |                   ~~^~~~~~~~~~~~~~~~~~~~
paths.cpp:17:77: warning: comparison of integer expressions of different signedness: 'std::set<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   17 |     if(edges[node][i]!=par && !path.count(cols[edges[node][i]])&&path.size()<k ){
      |                                                                  ~~~~~~~~~~~^~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7500 KB Output is correct
2 Correct 5 ms 7372 KB Output is correct
3 Correct 5 ms 7372 KB Output is correct
4 Correct 5 ms 7372 KB Output is correct
5 Correct 4 ms 7372 KB Output is correct
6 Correct 6 ms 7628 KB Output is correct
7 Correct 6 ms 7500 KB Output is correct
8 Correct 5 ms 7372 KB Output is correct
9 Correct 5 ms 7372 KB Output is correct
10 Correct 5 ms 7372 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3060 ms 127992 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7500 KB Output is correct
2 Correct 5 ms 7372 KB Output is correct
3 Correct 5 ms 7372 KB Output is correct
4 Correct 5 ms 7372 KB Output is correct
5 Correct 4 ms 7372 KB Output is correct
6 Correct 6 ms 7628 KB Output is correct
7 Correct 6 ms 7500 KB Output is correct
8 Correct 5 ms 7372 KB Output is correct
9 Correct 5 ms 7372 KB Output is correct
10 Correct 5 ms 7372 KB Output is correct
11 Execution timed out 3060 ms 127992 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 7372 KB Output is correct
2 Execution timed out 3061 ms 50844 KB Time limit exceeded
3 Halted 0 ms 0 KB -