
import java.util.*;
class Main{
	
    public static void main(String args[]){
    	Scanner sc=new Scanner(System.in);
    	String a=sc.next();
    	System.out.println("2018/"+a.substring(5,10));
    }
} import java.util.*; util.* java class Main{
	
    public static void main(String args[]){
    	Scanner sc=new Scanner(System.in);
    	String a=sc.next();
    	System.out.println("2018/"+a.substring(5,10));
    }
} Main public static void main(String args[]){
    	Scanner sc=new Scanner(System.in);
    	String a=sc.next();
    	System.out.println("2018/"+a.substring(5,10));
    } main {
    	Scanner sc=new Scanner(System.in);
    	String a=sc.next();
    	System.out.println("2018/"+a.substring(5,10));
    } Scanner sc=new Scanner(System.in); sc new Scanner(System.in) String a=sc.next(); a sc.next() sc.next sc System.out.println("2018/"+a.substring(5,10)) System.out.println System.out System System.out "2018/"+a.substring(5,10) "2018/" a.substring(5,10) a.substring a 5 10 String args[] args

import java.util.*;
class Main{
	
    public static void main(String args[]){
    	Scanner sc=new Scanner(System.in);
    	String a=sc.next();
    	System.out.println("2018/"+a.substring(5,10));
    }
}