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: Accepted)

import io.Source.stdin

object Main{
  def main(args: Array[String]){
    for(line <- stdin.getLines().toList){
      val sum = line.map{c => c.toString.toInt}.foldLeft(0)((acc, a) => acc + a)

      if (sum != 0){
        println(sum)
      }
    }
  }
}