#include"iostream"

 using namespace std;

 bool IsTwoPower(int n)

 {

     return !((n-)&n);

 }

 int main()

 {

     int n;

     while(cin>>n)

     {

         if(n==)

         {

             cout<<"no"<<endl;

             continue;

         }

         if(IsTwoPower(n))

             cout<<"yes"<<endl;

         else

             cout<<"no"<<endl;

     }

     return ;

 }