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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

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