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NEXTPREV - The next and the previous palindrome |
| Wersja polska | English version |
Input
The input consist of unknown number (lower than 100) of tests. Each test is a line with two integers x and y (0<=x<=2*109, length of y is at most 1000).
Output
For each test You should print:
- the next palindrome of y - if x is even
- the previous palindrome of y - if x is odd
Example
Input: 10 9029
11 9029 Output:
9119
9009
Note: Leading zeroes don't occur in the input and shouldn't occur in the output.
| Added by: | Piotr Kąkol |
| Date: | 2011-06-13 |
| Time limit: | 1.620s-3.286s |
| Source limit: | 50000B |
| Memory limit: | 1536MB |
| Cluster: | Cube (Intel G860) |
| Languages: | All except: SCM qobi |
hide comments
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2012-03-19 09:00:01 Piotr KÄ…kol
@De bugging - Your reading is invalid. Do not use cin.eof() unless You really need it. |
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2012-03-18 08:41:35 debugging
Could You write me what's wrong with #6677687 output? |
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2011-07-01 12:49:06 Piotr KÄ…kol
@Jander - No negavite numbers at all. |
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2011-06-30 10:28:50 Jander
Just for further clarification of hallvabo's question, can y be negative ? Ie we have to handle palindromes of -1234 for example. |
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2011-06-28 22:14:53 Piotr KÄ…kol
@hallvabo - Yes, for y=0 You print 2 instead of 1. But y>0 for previous palindrome. |
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2011-06-28 20:43:57 Hallvard Norheim Bø
Can y be less than 1? For what input does #5309983 fail? |
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2011-06-16 17:18:14 Piotr KÄ…kol
@hallvabo - 9 I added a note. Thanks for Your remark. |
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2011-06-16 12:04:12 HWK
@Piotr: Thanks but seems there are more special cases. I'll look for them. Last edit: 2011-06-17 13:33:55 |
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2011-06-15 21:16:05 Hallvard Norheim Bø
What about leading zeroes? 11 11 => 010 or 9? |
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2011-06-15 20:17:28 Piotr KÄ…kol
Of course. :-) 101 10 -> 9 not 00 |
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