import java.util.Scanner;

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

		Scanner sc = new Scanner(System.in);

		String s = sc.next();
		char[] a = new char[10];

		for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		}
		a[3] = '8';

		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		}
	}
} 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();
		char[] a = new char[10];

		for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		}
		a[3] = '8';

		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		}
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String s = sc.next();
		char[] a = new char[10];

		for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		}
		a[3] = '8';

		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		}
	} main {

		Scanner sc = new Scanner(System.in);

		String s = sc.next();
		char[] a = new char[10];

		for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		}
		a[3] = '8';

		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc char[] a = new char[10]; a new char[10] 10 for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		} int i = 0; int i = 0; i 0 i < s.length() i s.length() s.length s i++ i++ i {
			a[i] = s.charAt(i);
		} {
			a[i] = s.charAt(i);
		} a[i] = s.charAt(i) a[i] a i s.charAt(i) s.charAt s i a[3] = '8' a[3] a 3 '8' for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		} int i = 0; int i = 0; i 0 i < a.length i a.length a a.length i++ i++ i {
			System.out.print(a[i]);
		} {
			System.out.print(a[i]);
		} System.out.print(a[i]) System.out.print System.out System System.out a[i] a i String[] args args public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String s = sc.next();
		char[] a = new char[10];

		for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		}
		a[3] = '8';

		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		}
	}
} public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		String s = sc.next();
		char[] a = new char[10];

		for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		}
		a[3] = '8';

		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		}
	}
} Main
import java.util.Scanner;

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

		Scanner sc = new Scanner(System.in);

		String s = sc.next();
		char[] a = new char[10];

		for (int i = 0; i < s.length(); i++) {
			a[i] = s.charAt(i);
		}
		a[3] = '8';

		for (int i = 0; i < a.length; i++) {
			System.out.print(a[i]);
		}
	}
}