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: 87ms
Memory: 24300kB
Author: dszxlijun
In contest: 1122 
n = int(input())
t = 0
while n > 1:
    if n%2 == 0:
        n = n / 2
    else:
        n = n * 3 +1
    t+=1
print(t)