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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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2015-11-18 15:58:05
why "time limit exceeded"? my code works perfectly on my computer and in Ideone.com This inputs 11 34896787423968728967892736 236723867238967289367283967289, 238967238672837628937628937629731346716241386972409682365107365, 2587238597238461876343285468034689347616347826369850960347628364234293840, 745847583745, 3458349573485729865 etc are solved in 0,03 sec , I'm writing in python 3.5, when submitting choosing Python 3.4 . Can't get what's wrong please help Last edit: 2015-11-18 16:02:38 |
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2015-11-15 17:27:21 Dushyant Singh
For those who are getting WA even after confirming all test cases use cin instead of fflush and scanf. I just changed that in my code even without looking at it(which was months old) and got AC. scanf is a mess for strings and char arrays. Last edit: 2015-11-15 17:29:57 |
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2015-11-15 16:25:27
Confirmed that there are nothing wrong with the test cases. If u get a WA then there's some problem with ur code. I literally used an hour to debug just to reach an Accepted. Try 999, 8997, 3, 9, 100, 1000, 9999 beforehand. |
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2015-11-12 11:58:38 Priyank
First make a simple ago. (just for handling int) then make it more sophisticated for handling large numbers. Last edit: 2015-11-12 11:59:10 |
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2015-11-09 08:01:11
@abhi_269, go try "999999999999". |
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2015-11-04 05:58:28
"digits" |
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2015-11-03 15:15:10 LeppyR64
FYI: Almost everyone that posts on the forum for this problem skips exactly one word in this problem statement. Last edit: 2015-11-03 15:15:31 |
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2015-10-27 14:02:50
Very nice adhoc problem :) Got AC in first submission here but after many debugging. Had to generate a bruteforce solution of 1 to 10000 numbers and then match with my approach to find corner cases. |
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2015-10-25 20:59:17
Hahaha, accepted on the first go!! Love the problem! |
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2015-09-07 20:13:18
good for beginner ..!!! |