import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {

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

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

        Scanner sc = new Scanner(System.in);
        
        String S = sc.next().replace("2017","2018");
        
        System.out.println(S);
    } main {

        Scanner sc = new Scanner(System.in);
        
        String S = sc.next().replace("2017","2018");
        
        System.out.println(S);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next().replace("2017","2018"); S sc.next().replace("2017","2018") sc.next().replace sc.next() sc.next sc "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) throws Exception {

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

        Scanner sc = new Scanner(System.in);
        
        String S = sc.next().replace("2017","2018");
        
        System.out.println(S);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);
        
        String S = sc.next().replace("2017","2018");
        
        System.out.println(S);
    }
}
 