import java.util.*;
import static java.lang.System.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		A(sc);
	}
	
	public static void A(Scanner sc) {
		String s = sc.next();
		out.println(s.substring(0,3) + 8 + s.substring(4,10));
	}
} import java.util.*; util.* java import static java.lang.System.*; import static java.lang.System.*; import static java.lang.System.*; public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		A(sc);
	}
	
	public static void A(Scanner sc) {
		String s = sc.next();
		out.println(s.substring(0,3) + 8 + s.substring(4,10));
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		A(sc);
	} main {
		Scanner sc = new Scanner(System.in);
		A(sc);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) A(sc) A sc String[] args args public static void A(Scanner sc) {
		String s = sc.next();
		out.println(s.substring(0,3) + 8 + s.substring(4,10));
	} A {
		String s = sc.next();
		out.println(s.substring(0,3) + 8 + s.substring(4,10));
	} String s = sc.next(); s sc.next() sc.next sc out.println(s.substring(0,3) + 8 + s.substring(4,10)) out.println out s.substring(0,3) + 8 + s.substring(4,10) s.substring(0,3) + 8 + s.substring(4,10) s.substring(0,3) s.substring s 0 3 8 s.substring(4,10) s.substring s 4 10 Scanner sc sc public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		A(sc);
	}
	
	public static void A(Scanner sc) {
		String s = sc.next();
		out.println(s.substring(0,3) + 8 + s.substring(4,10));
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		A(sc);
	}
	
	public static void A(Scanner sc) {
		String s = sc.next();
		out.println(s.substring(0,3) + 8 + s.substring(4,10));
	}
} Main
import java.util.*;
import static java.lang.System.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		A(sc);
	}
	
	public static void A(Scanner sc) {
		String s = sc.next();
		out.println(s.substring(0,3) + 8 + s.substring(4,10));
	}
}
