import java.util.*;

public class Main{
      public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            str2[3] = "8";
            for(String s : str2){
              System.out.print(s);
            }
      }
} import java.util.*; util.* java public class Main{
      public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            str2[3] = "8";
            for(String s : str2){
              System.out.print(s);
            }
      }
} Main public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            str2[3] = "8";
            for(String s : str2){
              System.out.print(s);
            }
      } main {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            str2[3] = "8";
            for(String s : str2){
              System.out.print(s);
            }
      } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = sc.next(); str sc.next() sc.next sc String[] str2 = str.split(""); str2 str.split("") str.split str "" str2[3] = "8" str2[3] str2 3 "8" for(String s : str2){
              System.out.print(s);
            } String s str2 {
              System.out.print(s);
            } {
              System.out.print(s);
            } System.out.print(s) System.out.print System.out System System.out s String[] args args public class Main{
      public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            str2[3] = "8";
            for(String s : str2){
              System.out.print(s);
            }
      }
} public class Main{
      public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            str2[3] = "8";
            for(String s : str2){
              System.out.print(s);
            }
      }
} Main
import java.util.*;

public class Main{
      public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            String str = sc.next();
            String[] str2 = str.split("");
            str2[3] = "8";
            for(String s : str2){
              System.out.print(s);
            }
      }
}