Largest Common Palindrome Must You Find
By Jonathan Carvalhosa, IME (Instituto Militar de Engenharia) 
Brazil
By Jonathan Carvalhosa, IME (Instituto Militar de Engenharia) Brazil
Master Yoda has intercepted secret messages from the dark side of the force.
He is sure that all the messages have the same valuable piece of information that can help the Jedi against the Sith
Besides, he knows that the information he seeks is a palindrome.
However, he can`t find it because the messages are too big. That`s why he needs your help.
You have to build a program to find the length of the largest common palindrome of all the messages that Master Yoda intercepted.
The input consists of many test cases and ends with EOF. The first line of each test case contains a single positive integer n (n <= 10), the number of messages Master Yoda intercepted
The next n lines contain the messages, consisting only of between 1 and 50000 lowercase english letters ('a' - 'z')
For each test case, the output is a single integer, the length of the longest common palindrome of all messages
| Sample Input | Sample Output |
|
3 |
4 |