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;

class Main{
  public static void main(String args[]) throws IOException{

   int n,m,l;
   BufferedReader br = new BufferedReader(new InputStreamReader(System.in));


   while(true){

	   String line = br.readLine();
	   String[] token = line.split("");
	   if(line.equals("0")) break;
	   int sum = 0;
	   for(int i = 0; i < token.length;i++){
		   sum += Integer.parseInt( token[i] );
	   }

	   System.out.println(sum);

   }


  }
}