Submission #744906

#	Time	Username	Problem	Language	Result	Execution time	Memory
744906		sword060	Hiperkocka (COCI21_hiperkocka)	C++17	0 / 110	2 ms	3284 KiB

Main

#include <bits/stdc++.h>
using namespace std;
const int N=1<<16;
int x;
vector<int>all;
set<int>v[N];
set<vector<int>>ans;
int main(){
  ios::sync_with_stdio(0);cin.tie(0);
  srand(time(NULL));
  cin>>x;
  if(x==1){
    cout<<"1\n0 1\n";
    return 0;
  }
  for(int i=1;i<=x;i++){
    int l,r;cin>>l>>r;
    v[l].insert(r);v[r].insert(l);
  }
  for(int i=0;i<(1<<x);i++)
    all.push_back(i);
  for(int rep=0;rep<(1<<(x+1));rep++){
    random_shuffle(all.begin(),all.end());
    vector<int>cur;
    bool f=1;
    for(int i=0;i<=x;i++){
      cur.push_back(all[i]);
      for(int j=i+1;j<=x;j++){
        int m=all[i]^all[j];
        bool f1=v[all[i]].count(all[j])+v[all[j]].count(all[j]),f2=((m&(m-1))==0);
        if(f1^f2)f=0;
      }
    }
    if(f){
      sort(cur.begin(),cur.end());
      ans.insert(cur);
    }
    if(ans.size()==(1<<(x-1)))break;
  }
  cout<<(ans.size())<<"\n";
  for(auto i:ans){
    for(auto j:i)cout<<j<<" ";
    cout<<"\n";
  }
  return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:38:18: warning: comparison of integer expressions of different signedness: 'std::set<std::vector<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |     if(ans.size()==(1<<(x-1)))break;
      |        ~~~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 110