#458. When a power of 5 goes over N
You get N. Find the smallest p with 5ᵖ > N.
### Input
One integer N (1 ≤ N ≤ 10¹⁵).
### Output
p.
Examples
Input
54
Output
3
Input
2
Output
1
💡 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.