import java.util.*;

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

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