import java.util.Scanner;

public class Main {

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

		String S = sc.next();
		String ans =S.replace( "2017", "2018" ) ;

		System.out.println( ans );
	}
} import java.util.Scanner; Scanner java.util public class Main {

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

		String S = sc.next();
		String ans =S.replace( "2017", "2018" ) ;

		System.out.println( ans );
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();
		String ans =S.replace( "2017", "2018" ) ;

		System.out.println( ans );
	} main {
		Scanner sc = new Scanner(System.in);

		String S = sc.next();
		String ans =S.replace( "2017", "2018" ) ;

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

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

		String S = sc.next();
		String ans =S.replace( "2017", "2018" ) ;

		System.out.println( ans );
	}
} public class Main {

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

		String S = sc.next();
		String ans =S.replace( "2017", "2018" ) ;

		System.out.println( ans );
	}
} Main
import java.util.Scanner;

public class Main {

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

		String S = sc.next();
		String ans =S.replace( "2017", "2018" ) ;

		System.out.println( ans );
	}
}