import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		String n = sc.next();

		System.out.println("2018/01/"+n.substring(8));

		sc.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		String n = sc.next();

		System.out.println("2018/01/"+n.substring(8));

		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		String n = sc.next();

		System.out.println("2018/01/"+n.substring(8));

		sc.close();
	} main {
		Scanner sc = new Scanner((System.in));
		String n = sc.next();

		System.out.println("2018/01/"+n.substring(8));

		sc.close();
	} Scanner sc = new Scanner((System.in)); sc new Scanner((System.in)) String n = sc.next(); n sc.next() sc.next sc System.out.println("2018/01/"+n.substring(8)) System.out.println System.out System System.out "2018/01/"+n.substring(8) "2018/01/" n.substring(8) n.substring n 8 sc.close() sc.close sc String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		String n = sc.next();

		System.out.println("2018/01/"+n.substring(8));

		sc.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		String n = sc.next();

		System.out.println("2018/01/"+n.substring(8));

		sc.close();
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		String n = sc.next();

		System.out.println("2018/01/"+n.substring(8));

		sc.close();
	}
}
