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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class Main {
 
    public static final int BIG_NUM  = 2000000000;
    public static final int MOD  = 1000000007;
 
    public static void main(String[] args) {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int ans;
 
        while(true){
 
            try {
                String inputed = br.readLine();
                if(inputed.length() == 1 && inputed.equals("0"))break;
 
                ans = 0;
                for(int i = 0; i < inputed.length(); i++){
                    ans += inputed.charAt(i)-'0';
                }
 
                System.out.printf("%d\n", ans);
 
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}