import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] c = sc.next().toCharArray();
		for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		}

	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] c = sc.next().toCharArray();
		for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		}

	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] c = sc.next().toCharArray();
		for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		}

	} main {
		Scanner sc = new Scanner(System.in);
		char[] c = sc.next().toCharArray();
		for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		}

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] c = sc.next().toCharArray(); c sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		} int i=0; int i=0; i 0 i<c.length i c.length c c.length i++ i++ i {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		} {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		} if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[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(c[i]);
			} System.out.print(c[i]) System.out.print System.out System System.out c[i] c i String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] c = sc.next().toCharArray();
		for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		}

	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] c = sc.next().toCharArray();
		for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		}

	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		char[] c = sc.next().toCharArray();
		for (int i=0;i<c.length;i++) {
			if (i==3) {
				System.out.print('8');
			} else {
				System.out.print(c[i]);
			}
		}

	}
}