import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String c = sc.next();
    System.out.println("2018/01/"+c.substring(8,10));
    
  }
  

  
} import java.util.*; util.* java public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String c = sc.next();
    System.out.println("2018/01/"+c.substring(8,10));
    
  }
  

  
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String c = sc.next();
    System.out.println("2018/01/"+c.substring(8,10));
    
  } main {
    Scanner sc = new Scanner(System.in);
    String c = sc.next();
    System.out.println("2018/01/"+c.substring(8,10));
    
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String c = sc.next(); c sc.next() sc.next sc System.out.println("2018/01/"+c.substring(8,10)) System.out.println System.out System System.out "2018/01/"+c.substring(8,10) "2018/01/" c.substring(8,10) c.substring c 8 10 String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String c = sc.next();
    System.out.println("2018/01/"+c.substring(8,10));
    
  }
  

  
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String c = sc.next();
    System.out.println("2018/01/"+c.substring(8,10));
    
  }
  

  
} Main
import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String c = sc.next();
    System.out.println("2018/01/"+c.substring(8,10));
    
  }
  

  
}