import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		no1();
	}

	static void no1() {
		try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		}
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		no1();
	}

	static void no1() {
		try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		}
	}
} Main public static void main(String[] args) {
		no1();
	} main {
		no1();
	} no1() no1 String[] args args static void no1() {
		try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		}
	} no1 {
		try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		}
	} try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		} {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		} Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) new Scanner(System.in) String str = sc.nextLine(); str sc.nextLine() sc.nextLine sc System.out.println("2018/01/" + str.substring(8)) System.out.println System.out System System.out "2018/01/" + str.substring(8) "2018/01/" str.substring(8) str.substring str 8 public class Main {

	public static void main(String[] args) {
		no1();
	}

	static void no1() {
		try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		}
	}
} public class Main {

	public static void main(String[] args) {
		no1();
	}

	static void no1() {
		try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		}
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		no1();
	}

	static void no1() {
		try (Scanner sc = new Scanner(System.in)) {
			String str = sc.nextLine();
			System.out.println("2018/01/" + str.substring(8));
		}
	}
}
