import java.util.Scanner;

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

        s[3] = '8';

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

        s[3] = '8';

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

        s[3] = '8';

        String output = new String(s);
        System.out.println(s);
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        char[] s = sc.nextLine().toCharArray();

        s[3] = '8';

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

        s[3] = '8';

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

        s[3] = '8';

        String output = new String(s);
        System.out.println(s);
        sc.close();
    }
} Main
import java.util.Scanner;

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

        s[3] = '8';

        String output = new String(s);
        System.out.println(s);
        sc.close();
    }
}
