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SPOJ Problem Set (classical)
42. Adding Reversed Numbers
Problem code: ADDREV
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The Antique Comedians of Malidinesia prefer comedies to tragedies.
Unfortunately, most of the ancient plays are tragedies. Therefore the
dramatic advisor of ACM has decided to transfigure some tragedies into
comedies. Obviously, this work is very hard because the basic sense of the
play must be kept intact, although all the things change to their opposites.
For example the numbers: if any number appears in the tragedy, it must be
converted to its reversed form before being accepted into the comedy play.
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 main hero had 1245 strawberries in the tragedy, he has 5421
of them now. 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.
ACM needs to calculate with reversed numbers.
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).
Input
The input consists of N cases (equal to about 10000). 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.
Output
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
Sample input:
3
24 1
4358 754
305 794
Sample output:
34
1998
1
| Added by: | Adrian Kosowski |
| Date: | 2004-06-06 |
| Time limit: | 5s
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| Source limit: | 50000B |
| Languages: | All |
| Resource: | ACM Central European Programming Contest, Prague 1998 |
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