import java.util.*;
import java.math.RoundingMode;
import java.math.BigDecimal;
 
public class Main {
	
	
	 
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		s[3]='8';
		System.out.println(String.valueOf(s));
	}
} import java.util.*; util.* java import java.math.RoundingMode; RoundingMode java.math import java.math.BigDecimal; BigDecimal java.math public class Main {
	
	
	 
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		s[3]='8';
		System.out.println(String.valueOf(s));
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		s[3]='8';
		System.out.println(String.valueOf(s));
	} main {

		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		s[3]='8';
		System.out.println(String.valueOf(s));
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] s = sc.next().toCharArray(); s sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc s[3]='8' s[3] s 3 '8' System.out.println(String.valueOf(s)) System.out.println System.out System System.out String.valueOf(s) String.valueOf String s String[] args args public class Main {
	
	
	 
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		s[3]='8';
		System.out.println(String.valueOf(s));
	}
} public class Main {
	
	
	 
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		s[3]='8';
		System.out.println(String.valueOf(s));
	}
} Main
import java.util.*;
import java.math.RoundingMode;
import java.math.BigDecimal;
 
public class Main {
	
	
	 
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		s[3]='8';
		System.out.println(String.valueOf(s));
	}
}