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PALIN - The Next Palindrome |
A positive integer is called a palindrome if its representation in the decimal system is the same when read from left to right and from right to left. For a given positive integer K of not more than 1000000 digits, write the value of the smallest palindrome larger than K to output. Numbers are always displayed without leading zeros.
Input
The first line contains integer t, the number of test cases. Integers K are given in the next t lines.
Output
For each K, output the smallest palindrome larger than K.
Example
Input: 2 808 2133 Output: 818 2222
Warning: large Input/Output data, be careful with certain languages
| Added by: | adrian |
| Date: | 2004-05-01 |
| Time limit: | 2s-9s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: NODEJS PERL6 |
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2020-05-16 21:00:15
Try for these test cases 0012100-->12121 0003-->4 You need to get rid of the leading zeros |
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2020-05-10 18:28:28
I've got AC and I don't think that the implementation is difficult. Nice C++ code needs less than 80 lines of code. Last edit: 2020-05-10 18:29:45 |
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2020-05-10 03:34:49
Thanks @trulyness for the extra test cases Got some wa because of not having awared of them. Last edit: 2020-05-10 03:36:16 |
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2020-05-09 05:30:08
can anyone explain what problem says? |
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2020-05-07 16:17:01
do i just increment the input by one and check if its a palindrome or is there a better and a faster method? |
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2020-05-07 06:23:05
Its logic is easy but implementation is hard. It took me one complete day to make logic that covers all cases and then AC in 1 go. |
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2020-05-04 01:09:54
When they say, that elements are not more than 1000000 digits, they are not joking, my char array in C was one element to short Last edit: 2020-05-04 01:17:10 |
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2020-04-25 09:54:46
guys, there is space character after input in every line, just take care of it |
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2020-04-19 10:53:17
I am getting wrong answer for my submission, i am unable to figure out why, my code is working fine for the other listed test cases (the ones that are being provided by others in comment section) and it's also working fine for the a large no like 99999999999999 Last edit: 2020-04-19 10:57:50 |
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2020-04-17 20:31:20
here are the test cases on which your code should work: 123456 1234567 9999 99999 1 2991 3994 9999 5448 65343454 100 4111 A tip for debugging in case you get wrong answer and are not sure where your code is failing: - use a correct code and run it for all numbers from 0 to 100000 and use your code and run it for all numbers from 0 to 100000. check the difference in the outputs and you'll find which test cases are failing. hope this helps! Last edit: 2020-04-17 20:35:17 |
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