Without repetitions 3#8992

Without repetitions 3

1 second
64 megabytes
Very easy

You are given a string composed of English letters, punctuation marks, and spaces. Your task is to eliminate any consecutive repeated characters, replacing them with a single instance of that character.

Input

A single string containing English letters, punctuation marks, and spaces.

Output

Answer to the task.

Examples

Example 1

Loading
Loading