import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		System.out.println(S.replace("2017", "2018"));
		sc.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		System.out.println(S.replace("2017", "2018"));
		sc.close();
	}
} Main public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		System.out.println(S.replace("2017", "2018"));
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		System.out.println(S.replace("2017", "2018"));
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc System.out.println(S.replace("2017", "2018")) System.out.println System.out System System.out S.replace("2017", "2018") S.replace S "2017" "2018" sc.close() sc.close sc String[] args args public class Main {

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		System.out.println(S.replace("2017", "2018"));
		sc.close();
	}
} public class Main {

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		System.out.println(S.replace("2017", "2018"));
		sc.close();
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String S = sc.next();
		System.out.println(S.replace("2017", "2018"));
		sc.close();
	}
}