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 Scala (judge verdict: Wrong Answer)

object Main extends App{
    override def main(args:Array[String]) = {
        val sc = new java.util.Scanner(System.in)
        var sum = 0L
        Iterator.continually(new Datum(sc.nextLine)).takeWhile(_.isContinue)
        .foreach(d => sum = sum + d.getValue)
        println(sum)
    }
    
    case class Datum(buf:String){
    	val isContinue = buf != "0"
    	
    	val getValue = {
    		buf.foldLeft(0){(z,n) => z + n - '0'}
    	}
    }
}