import java.util.*;

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

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