### A+B for Input-Output Practice (IV)

Time Limit: 1000 ms Memory Limit: 65536 KiB

#### 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 3
5 1 2 4 4 5
0

#### Sample Output

9
16

HDOJ