Codeforces 55A Flea travel solution

Solve in C++:

1. ///**********ALLAH IS ALMIGHTY************///
2. ///AH Tonmoy
3. ///Department of CSE
4. ///Islamic University,Bangladesh
5. #include<bits/stdc++.h>
6. using namespace std;
7. int main()
8. {
9. long long n;
10. cin>>n;
11. while(n%2==0)
12. {
13. n=n/2;
14. }
15. if(n==1)
16. cout<<"YES"<<endl;
17. else
18. cout<<"NO"<<endl;
19. }