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 scala.io.Source.stdin

object Main {
  def main(args: Array[String]) {
    stdin.getLines.takeWhile(_ != "0").foreach {
      line => {
        val sum = line.map(_.asDigit).foldLeft(0)(_ + _)
        println(sum)
      }
    }
  }
}