import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String s = sc.next();

    s = s.replaceFirst("7", "8");
    System.out.println(s);

  }
} import java.util.Scanner; Scanner java.util public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String s = sc.next();

    s = s.replaceFirst("7", "8");
    System.out.println(s);

  }
} Main public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String s = sc.next();

    s = s.replaceFirst("7", "8");
    System.out.println(s);

  } main {

    Scanner sc = new Scanner(System.in);
    String s = sc.next();

    s = s.replaceFirst("7", "8");
    System.out.println(s);

  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc s = s.replaceFirst("7", "8") s s.replaceFirst("7", "8") s.replaceFirst s "7" "8" System.out.println(s) System.out.println 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 s = sc.next();

    s = s.replaceFirst("7", "8");
    System.out.println(s);

  }
} public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String s = sc.next();

    s = s.replaceFirst("7", "8");
    System.out.println(s);

  }
} Main
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    String s = sc.next();

    s = s.replaceFirst("7", "8");
    System.out.println(s);

  }
}