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 Python3 (judge verdict: Accepted)

array = []
suum = 0
while True:
    n = int(input())
    if n == 0:
        break
    array.append(n)
for i in range(len(array)):
    for i2 in range(len(str(array[i]))):
        suum += int(str(array[i])[i2])
    print(suum)
    suum = 0