Repetitions #4
Description
Time limit: 1.00 s Memory limit: 512 MB
You are given a DNA sequence: a string consisting of characters A, C, G, and T. Your task is to find the longest repetition in the sequence. This is a maximum-length substring containing only one type of character.
Input
The only input line contains a string of n characters.
Output
Print one integer: the length of the longest repetition.
Constraints
1≤n≤106
Example
Input:
ATTCGGGA
Output:
3