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: 118ms
Memory: 21432kB
Author: 15757052394
In contest: 1086 
i=0
n=input("");
while n<>1:
    if n%2==0:
        n=n/2;
        i=i+1
    else: 
        n=n*3+1;
        i=i+1;
    
print i