Start: Apr, 17, 2017 10:00:00
Python程序设计基础培训第二次作业
End: Apr, 23, 2017 14:00:00
Time elapsed:
Time remaining:
Problem_ID: B
Result: Accepted
Time: 116ms
Memory: 21432kB
Author: 13185117654
In contest: 1086 
t=0
n=int(raw_input())

while n!=1:
	if n % 2==0:
		n=n//2
	else:
		n=n*3+1
	t=t+1
print t