import java.util.*;

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

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