import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	}
System.out.println();
	}} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	}
System.out.println();
	}} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	}
System.out.println();
	} main {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	}
System.out.println();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s=sc.next(); s sc.next() sc.next sc char c[]=s.toCharArray(); c s.toCharArray() s.toCharArray s for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	} int i=0; int i=0; i 0 i<=s.length()-1 i s.length()-1 s.length() s.length s 1 i++ i++ i {
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	} {
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	} if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
} i!=3 i 3 {System.out.print(c[i]);} System.out.print(c[i]) System.out.print System.out System System.out c[i] c i {
	System.out.print(8);
} System.out.print(8) System.out.print System.out System System.out 8 System.out.println() System.out.println System.out System System.out String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	}
System.out.println();
	}} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	}
System.out.println();
	}} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	String s=sc.next();
	char c[]=s.toCharArray();
	for(int i=0;i<=s.length()-1;i++){
if(i!=3){System.out.print(c[i]);}else{
	System.out.print(8);
}

	}
System.out.println();
	}}