Subsequence-code2

/*package whatever //do not write package name here */

import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.*;

class GFG {

    static String str;
    static int n;
    static int character(char c)
    {
      if(c=='a'||c=='e'||c=='i'||c=='o'||c=='u')
        return 1;
      else
        return 0;
    }
    public static void main (String[] args) throws Exception{

        BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
        str=bf.readLine();
        StringBuffer s=new StringBuffer("");
        n=str.length();
        int ch[]=new int[n];
        for(int i=0;i<n;i++)
            ch[i]=character(str.charAt(i));

        char max=str.charAt(0);
        for(int i=0;i<n-1;i++)
        {
            if(ch[i]==ch[i+1]){
               if(str.charAt(i+1)>max)
                max=str.charAt(i+1);
               continue;
            }
            else{
                s.append(max);
                max=str.charAt(i+1);
            }
        }
        s.append(max);
        System.out.println(s);
    }
}