Reversed number is a number written in Arabic numerals but the order of digits is

reversed. The first digit becomes last and vice versa. For example, if the number is

1245, then it becomes 5421. Note that all the leading zeros are omitted. That means if

the number ends with a zero, the zero is lost by reversing (e.g. 1200 gives 21). Also note

that the reversed number never has any trailing zeros.

Your task is to add two reversed numbers and output their reversed sum. Of course, the

result is not unique because any particular number is a reversed form of several

numbers (e.g. 21 could be 12, 120 or 1200 before reversing). Thus we must assume that

no zeros were lost by reversing (e.g. assume that the original number was 12).

The input consists of N cases. The first line of the input contains only positive integer N.

Then follow the cases. Each case consists of exactly one line with two positive integers

separated by space. These are the reversed numbers you are to add. Numbers will be at

most 200 characters long.

For each case, print exactly one line containing only one integer - the reversed sum of

two reversed numbers. Omit any leading zeros in the output.

Example

Input

3

24 1

4358 754

305 794

Output

34

1998

1