제출 #744885

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
744885		sword060	Hiperkocka (COCI21_hiperkocka)	C++17	0 / 110	2 ms	3412 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;
  for(int i=1;i<=x;i++){
    int l,r;cin>>l>>r;
    v[l].insert(r);v[r].insert(l);
  }
  all.push_back(-1);
  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()+1,all.end());
    vector<int>cur;
    bool f=1;
    for(int i=1;i<=x+1;i++){
      cur.push_back(all[i]);
      for(int j=i+1;j<=x+1;j++){
        int m=all[i]^all[j];
        bool f1=v[all[i]].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;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:27:52: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   27 |         bool f1=v[all[i]].count(all[j]),f2=(m&(m-1)==0);
      |                                               ~~~~~^~~
Main.cpp:35:18: warning: comparison of integer expressions of different signedness: 'std::set<std::vector<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |     if(ans.size()==(1<<(x-1)))break;
      |        ~~~~~~~~~~^~~~~~~~~~~~

• Subtask 1: 0 / 110