using System;

public class Program

{

    public static void Main()

    {

        // Problem: Write a function that removes "consecutive" duplicate characters in a string and returns the resultant string.

        // 1. Input - aabccaddca Output - abcadca2. Input - ojcommmercee Output - ojcomerce

        string input = "ojcommmercee";

        string output = RemoveDuplicates(input);        

        Console.WriteLine(output);

    }

    public static string RemoveDuplicates(string input) {

        string output = input.Substring(0,1);

        for(int i = 1; i < input.Length; i++) {

            if(input[i] != input[i-1]) {

                output += input[i];

            }           

        }

        return output;

    }

}