# Number of digits

Execution time limit is 1 second

Runtime memory usage limit is 128 megabytes

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

Print the number of digits in the expression.

## Examples

Input #1

Answer #1

Submissions 6K

Acceptance rate 66%