import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    
    System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length()));
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    
    System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length()));
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    
    System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length()));
  } main {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    
    System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length()));
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length())) System.out.println System.out System System.out S.substring(0, 3) + "8" + S.substring(4, S.length()) S.substring(0, 3) + "8" + S.substring(4, S.length()) S.substring(0, 3) S.substring S 0 3 "8" S.substring(4, S.length()) S.substring S 4 S.length() S.length S String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    
    System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length()));
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    
    System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length()));
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    
    System.out.println(S.substring(0, 3) + "8" + S.substring(4, S.length()));
  }
}