import java.util.*;

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

} import java.util.*; util.* java public class Main {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		String str = in.nextLine();
		char[] array = str.toCharArray();
		array[3] = '8';
		System.out.println(array);
	}

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

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

} Main
import java.util.*;

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

}