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
rahultwr_ankur: 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
wille_25: 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 ;

sher_007: 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??

satyam552000: 2021-01-07 09:12:22

check for 9 and 99 and use strings it worked for me

shreyasz_07: 2020-11-23 17:45:18

I'm getting tle

Last edit: 2020-11-23 17:47:56
xander_70: 2020-11-16 09:57:10

How could I fix my TLE problem

shreyas_07: 2020-11-15 09:28:17

If you're getting wrong ans use these tc's:

TC :
40
808
2133
9999999
999999
899998
3423355356
100001
46887767
9
99
0
1991
1239400
123999500
56442
56471
123456
1234567
77777777777
2991
3994
9999
5448
653434
101
199
0012100
0003
123456
1234567
9999
99999
1
2991
3994
9999
5448
65343454
100
4111


Ans :

818
2222
10000001
1000001
900009
3423443243
101101
46888864
11
101
1
2002
1240421
124000421
56465
56565
124421
1235321
77777877777
2992
4004
10001
5555
654456
111
202
0013100
0110
124421
1235321
10001
100001
2
2992
4004
10001
5555
65344356
101
4114


Sorry some values might be repeated.
I got AC after 3 hrs of trying..

rajutsav1234: 2020-11-06 19:44:38

i have been writing code in C and it works perfectly on Ideone and is giving correct output, but here I am getting error. It is showing wrong answer. Please help me...

bong0s_guy01: 2020-10-25 06:53:04

Hey, does anyone know where can I get the input tests cuz I've tried the most optimal code I could but still exceed time limit, so I just want to k now where can I get the test to know how to optimize it

vcillusion: 2020-10-18 13:00:47

In C#, I tried with BigInteger and without it, the result is TLE. Can it be a limitation for C#? Please fine my solution below
http://discuss.spoj.com/t/palin-the-next-palindrome-time-limit-exceeded/40347


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 37%
Implementation difficulty
Implementation difficulty 50%
468 16