Typo Substrings Counting

Given a string consisting of lowercase English letters, count the number of typo substrings. A typo substring is defined as any maximal contiguous segment where a character repeats consecutively two or more times. For example, in the string success, there are two typo substrings: cc and ss.

Input is read from stdin and the result should be printed to stdout.

inputFormat

The input consists of a single line containing a non-empty string of lowercase English letters.

outputFormat

Output a single integer representing the number of typo substrings found in the given input.## sample

abcdef

0