Problem:
Sum of Numbers

Write a program which reads an integer and prints sum of its digits.

Input

The input consists of multiple datasets. For each dataset, an integer x is given in a line. The number of digits in x does not exceed 1000.

The input ends with a line including single zero. Your program should not process for this terminal symbol.

Output

For each dataset, print the sum of digits in x.

Sample Input

123
55
1000
0

Sample Output

6
10
1

Solution in JAVA (judge verdict: Accepted)

import java.util.*;
class Main {
    public static void main (String[] args) throws java.lang.Exception {
        Scanner sc = new Scanner(System.in);
        while(true) {
            String s = sc.next();
            if(s.equals("0")) break;
            int ret = 0;
            for(int i = 0; i < s.length(); i++) ret += s.charAt(i) - 48;
            System.out.println(ret);
        }
    }
}