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: 105ms
Memory: 24300kB
Author: jasonj
In contest: 1122 
a=int(input())
p=0
while a!=1:
    if a % 2==0:
        a=a/2
    else:
        a=a*3+1
    p+=1
print(p)