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.


The first line contains integer t, the number of test cases. Integers K are given in the next t lines.


For each K, output the smallest palindrome larger than K.




Warning: large Input/Output data, be careful with certain languages

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David Winiecki: 2018-04-09 08:10:24

Don't assume every line ends in a newline. I had to add logic like "if last character of input read from this line is not a number, then remove it (decrement length), else do nothing (don't decrement length)". Took me a very long time to figure that out. Extremely frustrating. :/

ashutoshiiita: 2018-03-30 18:04:55

TLE on using boost library of C++ why??

prabhakar2050: 2018-03-27 13:32:57

@Piotrek Nicowski Thanks :D

Piotrek Nicowski: 2018-03-23 20:39:46

@prabhakar2050 - For each K, output the smallest palindrome *** LARGER THAN *** K.

prabhakar2050: 2018-03-17 20:26:29

isnt 808 a palindrome? In the test case, it isnt. but on the net it clearly mentions its a palindrome. What should i do?

techymj: 2018-03-13 05:43:21

m new on spoj..can anyone tell me I can check that on which test case my code is not accepted

kkislay20: 2018-03-08 12:55:47

Attention should be given that there could 1000000 digits in a number.

manos_l98: 2018-03-04 14:19:15

I write this program with c++ and I get abort error because I use stoull can someone tell me how to fix it?

pigpork: 2018-03-04 03:33:33

Can we use arrays?

ani_mahajan: 2018-02-28 20:06:24

Can someone tell me that what would be output if input > 1000000 .

Added by:adrian
Time limit:2s-9s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: NODEJS PERL6

Problem's scores 1 vote

Concept difficulty
Concept difficulty 37%
Implementation difficulty
Implementation difficulty 50%
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