import java.io.*;
import java.util.*;
import java.lang.*;
import java.awt.*;
import java.awt.geom.*;
import java.math.*;
import java.text.*;
import java.math.BigInteger.*;
import java.util.Arrays;

public class   adsfadsfqeq
{
  BufferedReader in;
  StringTokenizer as;
  boolean nums[],nums2[];
  int[] nums1[];
  ArrayList < Integer > [] ar;
  Map<Integer,Integer > map = new HashMap<Integer, Integer>();
  public static void main (String[] args)
  {
    new adsfadsfqeq  ();
  }

  public int GCD(int a, int b) {
    if (b==0) return a;
    return GCD(b,a%b);
  }

  public adsfadsfqeq  ()
  {

    try
    {
      in = new BufferedReader (new InputStreamReader (System.in));
      FileWriter  out = null;
      out = new FileWriter ("data"  + ".txt");
      BufferedWriter bw = null;
      bw = new BufferedWriter(out);
      String a = "";
      for(int x = 0;x<50000;x++)
      {
        if(Math.random() < 0.60)
          a += 'a';
        else if(Math.random() < 0.5)
          a += 'x';
        else
          a += 'y';
      }
      bw.write(a +"\n");
      bw.close();
      out.close();
    }
    catch(Exception e)
    {
    }

  }







  String next () throws IOException
  {
    while (as == null || !as.hasMoreTokens ())
    {
      as = new StringTokenizer (in.readLine ().trim ());
    }


    return as.nextToken ();
  }



  long nextLong () throws IOException
  {
    return Long.parseLong (next ());
  }


  int nextInt () throws IOException
  {
    return Integer.parseInt (next ());
  }


  double nextDouble () throws IOException
  {
    return Double.parseDouble (next ());
  }


  String nextLine () throws IOException
  {
    return in.readLine ().trim ();
  }
}