Super Reduced String

import java.util.*;

public class Solution {

    static boolean isContinue = true;

    static String reduced_string(String s){
        int length = s.length();
        if (length < 2) {
            return s;
        }
        char des = s.charAt(0);
        int count = 1;
        String newString = "";
        for (int i=1; i<length; i++){
            if (des == s.charAt(i)){
                count++;
            } else {
                if (count % 2 == 1) {
                    newString = newString + des;
                }
                des = s.charAt(i);
                count = 1;
            }
        }
        if (count % 2 == 1) {
            newString = newString + des;
        }
        return newString;
    }

    static boolean checkContinue(String s) {
        int length = s.length();
        if (length < 2) {
            return false;
        }
        char des = s.charAt(0);
        for (int i=1; i<length; i++){
            if (des == s.charAt(i)){
                return true;
            } else {
                des = s.charAt(i);
            }
        }
        return false;
    }

    static String super_reduced_string(String s){
        String newString = s;
        while (isContinue == true) {
            newString = reduced_string(newString);
            isContinue = checkContinue(newString);
        }
        if (newString.length() == 0) {
            return "Empty String";
        }
        return newString;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.next();
        String result = super_reduced_string(s);
        System.out.println(result);
    }
}