**Problem Description**

**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