import java.util.Scanner;
public class Removedups
{
static Scanner scn=new Scanner(System.in);
public static void main(String[] args)
{
System.out.println("Enter a string ");
String str=scn.nextLine();
removeDups(str,0,1);
}
public static void removeDups(String str,int fc, int sc) // fc:first character sc:second character
{
if(str.length()==1)
{
System.out.println(str);
}
char a= str.charAt(fc);
if(a == str.charAt(sc))
{
str= a+ str.substring(sc+1);
}
removeDups(str,fc+1, sc+1);
System.out.println(str);
}
}