#414. Divide by 2 until 0
You get n. Repeat `n = n // 2` until n becomes 0. How many times do you repeat it?
### Input
One integer n (0 ≤ n ≤ 10¹²).
### Output
A number.
Examples
Input
638395
Output
20
Input
786546862
Output
30
💡 You can solve it with Python, JavaScript or blocks. Read the input line by line with input(). Don't print a question (like input("Number: ")). Print exactly what the output asks for, nothing more.