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Problems

Number of digits

Number of digits

Time limit 1 second
Memory limit 128 MiB

Given a string that contains an expression of numbers, signs of arithmetic operations and brackets. Find the number of digits used in the expression.

Input data

Arithmetic expression containing numbers, brackets, and arithmetic characters.

Output data

Print the number of digits in the expression.

Examples

Input example #1
9*8+76-54/3+2**10
Output example #1
10
Author Matviychuk Sergiy Volodymyrovych
Source "ABC programming"