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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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2021-03-22 21:59:34
Started On 12 am AC at 2.29 am |
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2021-03-20 08:39:44
AC with Java after 5-6 TLEs... Use BufferedReader and BufferedWriter for fast I/O, use strings and char instead of int array. DON'T convert the input number to BigInteger as it will slow your program down. Learnt quite a bit... Good luck! |
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2021-02-22 01:56:55
The challenge clearly states: "Numbers are always displayed without leading zeros." So, how does 0003 give 0110 (one leading zero) not 4? And how does 0012100 give 0013100 (two leading zeroes) rather than 12121? |
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2021-02-20 10:26:58
Good Problem!! My advise to approach this problem is take some sample different cases, analyse them and try to come up with its implementation. Thanks for different test cases It helped a lot!! :) |
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2021-02-19 14:47:33
After 2 hour struggling ..finally got AC.. thanks to shreyas_07 for TCs..it helped a lot Last edit: 2021-02-19 14:47:55 |
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2021-01-08 20:58:32
Finally AC --- (0.02s) The Input given by shreyas_07 is not working correctly (infinite loop occurs in c++), But it Still Got AC ; |
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2021-01-07 11:27:04
I used string to take input as the input can be as large as 10^6 digits and then i stored it in an int array. It is giving correct answers but I got TLE on the problem. Any suggestions as to how approach this problem in much optimized way?? |
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2021-01-07 09:12:22
check for 9 and 99 and use strings it worked for me |
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2020-11-23 17:45:18
I'm getting tle Last edit: 2020-11-23 17:47:56 |
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2020-11-16 09:57:10
How could I fix my TLE problem |
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