import java.util.Scanner;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();
    String result = S.replaceAll("2017", "2018");
    System.out.println(result);
  }
} import java.util.Scanner; Scanner java.util public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();
    String result = S.replaceAll("2017", "2018");
    System.out.println(result);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();
    String result = S.replaceAll("2017", "2018");
    System.out.println(result);
  } main {
    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();
    String result = S.replaceAll("2017", "2018");
    System.out.println(result);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.nextLine(); S sc.nextLine() sc.nextLine sc String result = S.replaceAll("2017", "2018"); result S.replaceAll("2017", "2018") S.replaceAll S "2017" "2018" System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();
    String result = S.replaceAll("2017", "2018");
    System.out.println(result);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();
    String result = S.replaceAll("2017", "2018");
    System.out.println(result);
  }
} Main
import java.util.Scanner;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String S = sc.nextLine();
    String result = S.replaceAll("2017", "2018");
    System.out.println(result);
  }
}
