import java.util.*;
public class Main {
    public static void main(String[] args) throws Exception {
       Scanner sc = new Scanner(System.in);
       String line = sc.nextLine();
       String []array = line.split("");
       array[3] = "8";
       
       for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       }
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
       Scanner sc = new Scanner(System.in);
       String line = sc.nextLine();
       String []array = line.split("");
       array[3] = "8";
       
       for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       }
    }
} Main public static void main(String[] args) throws Exception {
       Scanner sc = new Scanner(System.in);
       String line = sc.nextLine();
       String []array = line.split("");
       array[3] = "8";
       
       for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       }
    } main {
       Scanner sc = new Scanner(System.in);
       String line = sc.nextLine();
       String []array = line.split("");
       array[3] = "8";
       
       for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String line = sc.nextLine(); line sc.nextLine() sc.nextLine sc String []array = line.split(""); array line.split("") line.split line "" array[3] = "8" array[3] array 3 "8" for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       } int i = 0; int i = 0; i 0 i < array.length i array.length array array.length i++ i++ i {
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       } {
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       } if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           } i == array.length i array.length array array.length {
               System.out.println(array[i]);
           } System.out.println(array[i]) System.out.println System.out System System.out array[i] array i {
               System.out.print(array[i]);
           } System.out.print(array[i]) System.out.print System.out System System.out array[i] array i String[] args args public class Main {
    public static void main(String[] args) throws Exception {
       Scanner sc = new Scanner(System.in);
       String line = sc.nextLine();
       String []array = line.split("");
       array[3] = "8";
       
       for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       }
    }
} public class Main {
    public static void main(String[] args) throws Exception {
       Scanner sc = new Scanner(System.in);
       String line = sc.nextLine();
       String []array = line.split("");
       array[3] = "8";
       
       for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       }
    }
} Main
import java.util.*;
public class Main {
    public static void main(String[] args) throws Exception {
       Scanner sc = new Scanner(System.in);
       String line = sc.nextLine();
       String []array = line.split("");
       array[3] = "8";
       
       for(int i = 0; i < array.length; i++){
           if(i == array.length){
               System.out.println(array[i]);
           }else{
               System.out.print(array[i]);
           }
           
       }
    }
}
