import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String a[] = new String[3];
    a = s.split("/",0);
    a[0] = "2018";
    String ans = String.join("/",a);
    System.out.println(ans);
  }
} 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 a[] = new String[3];
    a = s.split("/",0);
    a[0] = "2018";
    String ans = String.join("/",a);
    System.out.println(ans);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String a[] = new String[3];
    a = s.split("/",0);
    a[0] = "2018";
    String ans = String.join("/",a);
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String a[] = new String[3];
    a = s.split("/",0);
    a[0] = "2018";
    String ans = String.join("/",a);
    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 a[] = new String[3]; a new String[3] 3 a = s.split("/",0) a s.split("/",0) s.split s "/" 0 a[0] = "2018" a[0] a 0 "2018" String ans = String.join("/",a); ans String.join("/",a) String.join String "/" a 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 a[] = new String[3];
    a = s.split("/",0);
    a[0] = "2018";
    String ans = String.join("/",a);
    System.out.println(ans);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String a[] = new String[3];
    a = s.split("/",0);
    a[0] = "2018";
    String ans = String.join("/",a);
    System.out.println(ans);
  }
} Main
import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    String a[] = new String[3];
    a = s.split("/",0);
    a[0] = "2018";
    String ans = String.join("/",a);
    System.out.println(ans);
  }
}
