import java.util.*;
import java.lang.*;


public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = s.substring(0, 3) + "8" + s.substring(4);
        System.out.println(t);
    }
} import java.util.*; util.* java import java.lang.*; lang.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = s.substring(0, 3) + "8" + s.substring(4);
        System.out.println(t);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = s.substring(0, 3) + "8" + s.substring(4);
        System.out.println(t);
    } main {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = s.substring(0, 3) + "8" + s.substring(4);
        System.out.println(t);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc String t = s.substring(0, 3) + "8" + s.substring(4); t s.substring(0, 3) + "8" + s.substring(4) s.substring(0, 3) + "8" + s.substring(4) s.substring(0, 3) s.substring s 0 3 "8" s.substring(4) s.substring s 4 System.out.println(t) System.out.println System.out System System.out t String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = s.substring(0, 3) + "8" + s.substring(4);
        System.out.println(t);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = s.substring(0, 3) + "8" + s.substring(4);
        System.out.println(t);
    }
} Main
import java.util.*;
import java.lang.*;


public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        String t = s.substring(0, 3) + "8" + s.substring(4);
        System.out.println(t);
    }
}
