A flea is sitting at one of the *n* hassocks, arranged in a circle, at the moment. After minute number *k* the flea jumps through *k* - 1 hassoсks (clockwise). For example, after the first minute the flea jumps to the neighboring hassock. You should answer: will the flea visit all the hassocks or not. We assume that flea has infinitely much time for this jumping.
The only line contains single integer: 1 ≤ *n* ≤ 1000 — number of hassocks.
# bsdk idhar kya dekhne ko aaya hai, khud kr!!!
# import math
# from itertools import *
# import random
# import calendar
# import datetime
# import webbrowser

n = int(input())
if n & (n - 1) > 0:
    print("NO")
else:
    print("YES")
