import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String  s = sc.nextLine();
        char[] c = s.toCharArray();

        c[3]='8';
        System.out.println(c);
    }

} import java.util.*; util.* java public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String  s = sc.nextLine();
        char[] c = s.toCharArray();

        c[3]='8';
        System.out.println(c);
    }

} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String  s = sc.nextLine();
        char[] c = s.toCharArray();

        c[3]='8';
        System.out.println(c);
    } main {
        Scanner sc = new Scanner(System.in);
        String  s = sc.nextLine();
        char[] c = s.toCharArray();

        c[3]='8';
        System.out.println(c);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String  s = sc.nextLine(); s sc.nextLine() sc.nextLine sc char[] c = s.toCharArray(); c s.toCharArray() s.toCharArray s c[3]='8' c[3] c 3 '8' System.out.println(c) System.out.println System.out System System.out c String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String  s = sc.nextLine();
        char[] c = s.toCharArray();

        c[3]='8';
        System.out.println(c);
    }

} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String  s = sc.nextLine();
        char[] c = s.toCharArray();

        c[3]='8';
        System.out.println(c);
    }

} Main
import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String  s = sc.nextLine();
        char[] c = s.toCharArray();

        c[3]='8';
        System.out.println(c);
    }

}
