import java.util.Scanner;

public class Main {

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

		for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		}

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

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

		for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		}

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

		for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		}

	} main {
		Scanner scanner = new Scanner(System.in);
		String s = scanner.next();

		for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		}

	} Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String s = scanner.next(); s scanner.next() scanner.next scanner for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		} int i = 0; int i = 0; i 0 i < 10 i 10 i++ i++ i {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		} {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		} if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			} i == 3 i 3 {
				System.out.print("8");
			} System.out.print("8") System.out.print System.out System System.out "8" {
				System.out.print(s.charAt(i));
			} System.out.print(s.charAt(i)) System.out.print System.out System System.out s.charAt(i) s.charAt s i String args[] args public class Main {

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

		for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		}

	}
} public class Main {

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

		for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		}

	}
} Main
import java.util.Scanner;

public class Main {

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

		for (int i = 0; i < 10; i++) {
			if (i == 3) {
				System.out.print("8");
			} else {
				System.out.print(s.charAt(i));
			}
		}

	}
}
