import java.util.*;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String s_year = s.substring(0,4);
    String date = s.substring(5,10);
    String year = "2018";

    System.out.println(year+"/"+date);

  }

} import java.util.*; util.* java public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String s_year = s.substring(0,4);
    String date = s.substring(5,10);
    String year = "2018";

    System.out.println(year+"/"+date);

  }

} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String s_year = s.substring(0,4);
    String date = s.substring(5,10);
    String year = "2018";

    System.out.println(year+"/"+date);

  } main {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String s_year = s.substring(0,4);
    String date = s.substring(5,10);
    String year = "2018";

    System.out.println(year+"/"+date);

  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc String s_year = s.substring(0,4); s_year s.substring(0,4) s.substring s 0 4 String date = s.substring(5,10); date s.substring(5,10) s.substring s 5 10 String year = "2018"; year "2018" System.out.println(year+"/"+date) System.out.println System.out System System.out year+"/"+date year+"/"+date year "/" date String[] args args public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String s_year = s.substring(0,4);
    String date = s.substring(5,10);
    String year = "2018";

    System.out.println(year+"/"+date);

  }

} public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String s_year = s.substring(0,4);
    String date = s.substring(5,10);
    String year = "2018";

    System.out.println(year+"/"+date);

  }

} Main
import java.util.*;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String s_year = s.substring(0,4);
    String date = s.substring(5,10);
    String year = "2018";

    System.out.println(year+"/"+date);

  }

}
