Start: Nov, 12, 2017 10:00:00
2017秋Python程序设计基础培训第二次作业
End: Nov, 19, 2017 12:00:00
Time elapsed:
Time remaining:
Problem_ID: B
Result: Accepted
Time: 92ms
Memory: 24436kB
Author: hzgubo
In contest: 1122 
a = int(input())
count =0
while a!=1:
	if a%2==1:
		a=a*3+1
	else:
		a=a/2
	count =count+1
print(count)