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>

#define MAX 1000

int main() {
    //変数の宣言
    int x[MAX];
    int n=0, i, xhako, total; //処理用
    
    
    //入力
    while (1) {
        scanf("%d", &x[n]);
        if (x[n] == 0) {
            break;
        }
        n++;
    }
    
    //１０で割って余りをtotal+=してく。
    //整数部分が１に満たなくなるまで繰り返す
    for (i=0; i<n; i++) {
        total = 0; //初期化
        xhako = x[i];
        
        while (1) {
            total += xhako % 10;
            if (xhako < 1) {
                break;
            }
        }
        printf("%d\n", total);
    }
    
    
    
    
    return 0;
}