Competitions

# Sum of digits in the text

The text is given. Find the sum of all digits in it.

#### Input

Contains sequence of characters - a text.

#### Output

Print the sum of all digits in the text.

#### Example

Text contains digits 4, 1, 2, 4. Their sum is 4 + 1 + 2 + 4 = 11.

Time limit 1 second
Memory limit 128 MiB
Input example #1
Cats =="+41"
Dogs 2 and 4pigs
Output example #1
11

Author Michael Medvediev