import java.util.Scanner;

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

        String s = sc.nextLine();
        if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s);
    }
} 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.nextLine();
        if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s);
    } main {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.nextLine(); s sc.nextLine() sc.nextLine sc if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s); s.startsWith("2017") s.startsWith s "2017" System.out.println(s.replace("2017", "2018")) System.out.println System.out System System.out s.replace("2017", "2018") s.replace s "2017" "2018" System.out.println(s) System.out.println System.out System System.out s String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        String s = sc.nextLine();
        if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s);
    }
} Main
import java.util.Scanner;

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

        String s = sc.nextLine();
        if (s.startsWith("2017"))
            System.out.println(s.replace("2017", "2018"));
        else
            System.out.println(s);
    }
}