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 JavaScript (judge verdict: Wrong Answer)

(function(input) {
    var p = input.split('\n');
    for (var i = 0; i < p.length; i++) {
        var x = Number(p[i]);
        if (x === 0) {
            return;
        }
        console.log(String(x).split('').map(Number).reduce(function(a, b) {
            return a + b;
        }));
    }
})(require('fs').readFileSync('/dev/stdin', 'utf8'));