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


hide comments
Juan: 2017-03-26 03:40:18

@satyamr1 I'm trying to solve it keeping the string representation of the number and building the next palindrome by string manipulation. I won't give more details, because it would simply give too much information

amrkk: 2017-03-25 21:13:44

I am getting run time error but don't understand why, can anyone help??

piyush1399: 2017-03-25 19:46:27

Finally after three month I got AC. And all the credit goes to Poojan Patel(@poojan124) because her test case help me a lot.
Tricky test cases are
Input:
5
9
100
999
4998
421999767
Output:
6
11
101
1001
5005
422000224
Question is correct and you are getting wrong answer because you left some cases that can't seem easily.I am also blaming admin but when check all cases given in comment section i get all correct but on 21st page of comment section i got a test case which is responsible for my wrong submission.

Last edit: 2017-03-27 10:14:14
nachi_w: 2017-03-23 05:59:58

Guys where can i find the test cases??
its running properly on my IDE but not on submission.

akibk001: 2017-03-21 21:58:49

thanks dimz01 for the test case 9

sandy1410: 2017-03-21 16:27:13

nice question

nkumar_1896: 2017-03-19 20:04:20

lovely que.

arthur1991: 2017-03-19 09:40:56

i love qianqian

amarjeet_123: 2017-03-14 21:31:13

how can i reduce my runtime

alexakel: 2017-03-06 10:07:56

Is there effective test cases? How can I check, whether my program works well on this site? It is awful service. CodingGame in such way is more better


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

Problem's scores 1 vote

Concept difficulty
Concept difficulty 38%
Implementation difficulty
Implementation difficulty 48%
200 6