import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in);

		String inS = stdin.next();
		System.out.println(inS.substring(0, 3) + "8" + inS.substring(4));
	}

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

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in);

		String inS = stdin.next();
		System.out.println(inS.substring(0, 3) + "8" + inS.substring(4));
	}

} Main public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in);

		String inS = stdin.next();
		System.out.println(inS.substring(0, 3) + "8" + inS.substring(4));
	} main {
		@SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in);

		String inS = stdin.next();
		System.out.println(inS.substring(0, 3) + "8" + inS.substring(4));
	} @SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in); stdin new Scanner(System.in) String inS = stdin.next(); inS stdin.next() stdin.next stdin System.out.println(inS.substring(0, 3) + "8" + inS.substring(4)) System.out.println System.out System System.out inS.substring(0, 3) + "8" + inS.substring(4) inS.substring(0, 3) + "8" + inS.substring(4) inS.substring(0, 3) inS.substring inS 0 3 "8" inS.substring(4) inS.substring inS 4 String[] args args public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in);

		String inS = stdin.next();
		System.out.println(inS.substring(0, 3) + "8" + inS.substring(4));
	}

} public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in);

		String inS = stdin.next();
		System.out.println(inS.substring(0, 3) + "8" + inS.substring(4));
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner stdin = new Scanner(System.in);

		String inS = stdin.next();
		System.out.println(inS.substring(0, 3) + "8" + inS.substring(4));
	}

}
