Sum of Digits
Print the sum of the decimal digits of (ignore the minus sign for negative numbers).
Input
A single integer .
Output
The digit sum.
Constraints
Sample 1
Input
1234
Output
10
Sample 2
Input
-907
Output
16
Print the sum of the decimal digits of (ignore the minus sign for negative numbers).
A single integer .
The digit sum.
Input
1234
Output
10
Input
-907
Output
16