Submission #745108

#TimeUsernameProblemLanguageResultExecution timeMemory
745108sword060Hiperkocka (COCI21_hiperkocka)C++17
0 / 110
2 ms3296 KiB
#include <bits/stdc++.h> using namespace std; const int N=1<<16; int x; vector<int>all; set<int>v[N]; set<vector<int>>fnd; vector<vector<int>>ans; set<pair<int,int>>edges; 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); } 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]; int f1=v[i].count(j)+v[j].count(i),f2=(m==1||((m&(m-1))==0)); if((f1>0)^f2)f=0; if(f2&&edges.count({i,j}))f=0; } } vector<int>xd=cur; sort(xd.begin(),xd.end()); f&=(fnd.find(xd)==fnd.end()); if(f){ fnd.insert(xd); ans.push_back(cur); for(int i=1;i<=x;i++) for(int j=i+1;j<=x;j++){ int m=all[i]^all[j]; if(m==1||((m&(m-1))==0))edges.insert({i,j}); } } if(fnd.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:45:18: warning: comparison of integer expressions of different signedness: 'std::set<std::vector<int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |     if(fnd.size()==(1<<(x-1)))break;
      |        ~~~~~~~~~~^~~~~~~~~~~~
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