#508. String: Number of digits
You are given one line of text. Find and print: **Number of digits**.
### Input
One line of text.
### Output
The answer.
Examples
Input
X9 NUMBER SUMMER
Output
1
Input
river forest python List
Output
0
💡 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.