import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s;
        s = sc.next();
        char str[] = s.toCharArray();
        str[3] = '8';
        System.out.println(str);
        sc.close();
    }
} import java.util.*; util.* java import java.io.*; io.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s;
        s = sc.next();
        char str[] = s.toCharArray();
        str[3] = '8';
        System.out.println(str);
        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s;
        s = sc.next();
        char str[] = s.toCharArray();
        str[3] = '8';
        System.out.println(str);
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        String s;
        s = sc.next();
        char str[] = s.toCharArray();
        str[3] = '8';
        System.out.println(str);
        sc.close();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s; s s = sc.next() s sc.next() sc.next sc char str[] = s.toCharArray(); str s.toCharArray() s.toCharArray s str[3] = '8' str[3] str 3 '8' System.out.println(str) System.out.println System.out System System.out str sc.close() sc.close sc String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s;
        s = sc.next();
        char str[] = s.toCharArray();
        str[3] = '8';
        System.out.println(str);
        sc.close();
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s;
        s = sc.next();
        char str[] = s.toCharArray();
        str[3] = '8';
        System.out.println(str);
        sc.close();
    }
} Main
import java.util.*;
import java.io.*;

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