import java.util.*;
public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    for(int i=0 ; i<10 ; i++){
      if(i==3){
        System.out.print(8);
      }else{
        System.out.print(s.charAt(i));
      }
    }
    System.out.println();
  }
} import java.util.*; util.* java public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    for(int i=0 ; i<10 ; 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) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    for(int i=0 ; i<10 ; i++){
      if(i==3){
        System.out.print(8);
      }else{
        System.out.print(s.charAt(i));
      }
    }
    System.out.println();
  } main {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    for(int i=0 ; i<10 ; 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<10 ; i++){
      if(i==3){
        System.out.print(8);
      }else{
        System.out.print(s.charAt(i));
      }
    } int i=0 ; int i=0 ; i 0 i<10 i 10 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 String[] args args public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    for(int i=0 ; i<10 ; i++){
      if(i==3){
        System.out.print(8);
      }else{
        System.out.print(s.charAt(i));
      }
    }
    System.out.println();
  }
} public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    for(int i=0 ; i<10 ; i++){
      if(i==3){
        System.out.print(8);
      }else{
        System.out.print(s.charAt(i));
      }
    }
    System.out.println();
  }
} Main
import java.util.*;
public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    for(int i=0 ; i<10 ; i++){
      if(i==3){
        System.out.print(8);
      }else{
        System.out.print(s.charAt(i));
      }
    }
    System.out.println();
  }
}
