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: 101ms
Memory: 24432kB
Author: lijian3256
In contest: 1122

n = eval(input())
ans = 0
while n != 1 :
    if n % 2 == 0:
        n /= 2;
    else:
        n = n * 3 + 1
    ans = ans + 1
print(ans)