View Compilation Error

0_0_39319144_19049.cpp: In function 'int main()':
0_0_39319144_19049.cpp:3:218: error: expected ')' before '!' token
    3 | using namespace std;list<int>a;list<int>::iterator it;int main(){int T,n;cin>>T;while(T--){cin>>n;a.clear();int k=2;for(int i=1;i<=n;i++)a.push_back(i);while(a.size()>3){int cnt=1;for(it=a.begin();it!=a.end();){if(cnt!!%k==0)it=a.erase(it);else it++;}k=(k==3 ? 3 : 2);}for(it=a.begin();it!=a.end();it++){if(it!=a.begin())printf(" ");printf("%d",*it);}cout<<"\n";}return 0;}
      |                                                                                                                                                                                                                      ~   ^
      |                                                                                                                                                                                                                          )