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: 79ms
Memory: 24436kB
Author: wjj
In contest: 1122 
n=int(input())
t=0  
while n>1:
   if n%2==0:
      n=n/2
      t+=1
   else:
      n=n*3+1
      t+=1
    
print (t)