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 C (judge verdict: Time Limit Exceeded)

#include<stdio.h>
 
int main(void)
{
    char num[1000];
    int count,tmp,sum;
    while(1){
	scanf("%s", num);
	count=0;
	sum=0;	
	while(1){
                if(num[count]=='\0') break;
              	tmp=(int)num[count++]-48;
		sum+=(tmp%10)+(tmp/10);
	}
	printf("%d\n",sum);
    }
    return 0;   
}