文理学院程序设计在线练习


A+B for Input-Output Practice (IV)

Time Limit: 1 Second(s)    Memory Limit: 32 MB

Total Submission(s): 1986   Accepted Submission(s): 1187
Problem Description

Your task is to Calculate the sum of some integers.

Input

Input contains multiple test cases. Each test case contains a integer N, and then N integers follow in the same line. A test case starting with 0 terminates the input and this test case is not to be processed.

Output

For each group of input integers you should output their sum in one line, and with one line of output for each line in input.

Sample Input
4 1 2 3 4
5 1 8 3 4 5
0
Sample Output
10
21