백준) 30224번 - python

n = int(input())
if "7" not in str(n) and n % 7 !=0: print(0)
elif "7" not in str(n) and n % 7 == 0: print(1)
elif "7" in str(n) and n % 7 !=0: print(2)
elif "7" in str(n) or n % 7 == 0: print(3)