1203 -- 无题

无题
Time Limit:1000MS Memory Limit:65536K

Total Submit:125 Accepted:60
Description
A student of ahu Computer Science & Technology School named CQ wants to make a interesting work.He wants to calculate the sum of a positive integer that anyone gives to him.Please write a program
to do this work.

Input
输入若干行，每行代表一个需要求和的正整数，整数不超过700位

最后一行为0，表示输入结束

Output
输出若干行，每行代表对应数值的求和结果。

Sample Input

321
456
789
0

Sample Output

6
15
24

Source