
import java.io.*;
import java.util.*;

class Main{
	public static void main(String[] args){
		solve();
	}
	public static void solve(){
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		for(int i=0;i<s.length();i++){
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		}
		System.out.println();
	}
}
 import java.io.*; io.* java import java.util.*; util.* java class Main{
	public static void main(String[] args){
		solve();
	}
	public static void solve(){
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		for(int i=0;i<s.length();i++){
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		}
		System.out.println();
	}
} Main public static void main(String[] args){
		solve();
	} main {
		solve();
	} solve() solve String[] args args public static void solve(){
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		for(int i=0;i<s.length();i++){
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		}
		System.out.println();
	} solve {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		for(int i=0;i<s.length();i++){
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		}
		System.out.println();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc for(int i=0;i<s.length();i++){
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		} int i=0; int i=0; i 0 i<s.length() i s.length() s.length s i++ i++ i {
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		} {
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		} if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			} i==3 i 3 {
				System.out.print(8);
			} System.out.print(8) System.out.print System.out System System.out 8 {
				System.out.print(s.charAt(i));
			} System.out.print(s.charAt(i)) System.out.print System.out System System.out s.charAt(i) s.charAt s i System.out.println() System.out.println System.out System System.out

import java.io.*;
import java.util.*;

class Main{
	public static void main(String[] args){
		solve();
	}
	public static void solve(){
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		for(int i=0;i<s.length();i++){
			if(i==3){
				System.out.print(8);
			}
			else{
				System.out.print(s.charAt(i));
			}
		}
		System.out.println();
	}
}

