Remove consecutive duplicate characters (e.g., "aaabb" → "ab").

Difficulty: Medium

Phase: 5 · Strings

XP Reward: 20 XP

Topics: Strings, Medium

Supported Languages: Python, JavaScript, C, C++, Java

Problem Description

Remove adjacent consecutive duplicate characters (e.g., 'aaabb' becomes 'ab'). Input Format: Read input from standard input (stdin). Output Format: Print the result to standard output (stdout).

Constraints

-10^9 <= N <= 10^9

Examples

Example 1

Input: aaabbcddd

Output: abcd

Explanation: Sample execution for input aaabbcddd