import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;

public class Main {

	public static void main(String[] args) {

		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.nio.charset.StandardCharsets; StandardCharsets java.nio.charset public class Main {

	public static void main(String[] args) {

		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

} Main public static void main(String[] args) {

		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		}
	} main {

		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		}
	} InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8); reader new InputStreamReader(System.in, StandardCharsets.UTF_8) try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} IOException e {
			e.printStackTrace();
		} e.printStackTrace() e.printStackTrace e {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} BufferedReader br = new BufferedReader(reader) BufferedReader br = new BufferedReader(reader) new BufferedReader(reader) char[] c = br.readLine().toCharArray(); c br.readLine().toCharArray() br.readLine().toCharArray br.readLine() br.readLine br c[3] = '8' c[3] c 3 '8' System.out.println(new String(c)) System.out.println System.out System System.out new String(c) String[] args args public class Main {

	public static void main(String[] args) {

		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

} public class Main {

	public static void main(String[] args) {

		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;

public class Main {

	public static void main(String[] args) {

		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		try(BufferedReader br = new BufferedReader(reader)) {
			char[] c = br.readLine().toCharArray();
			c[3] = '8';
			System.out.println(new String(c));
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}
