import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    scan.close();

    System.out.println(S.equals("ABC") ? "ARC" : "ABC");
  }
} import java.util.Scanner; Scanner java.util public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    scan.close();

    System.out.println(S.equals("ABC") ? "ARC" : "ABC");
  }
} Main public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    scan.close();

    System.out.println(S.equals("ABC") ? "ARC" : "ABC");
  } main {
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    scan.close();

    System.out.println(S.equals("ABC") ? "ARC" : "ABC");
  } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String S = scan.next(); S scan.next() scan.next scan scan.close() scan.close scan System.out.println(S.equals("ABC") ? "ARC" : "ABC") System.out.println System.out System System.out S.equals("ABC") ? "ARC" : "ABC" S.equals("ABC") S.equals S "ABC" "ARC" "ABC" String[] args args public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    scan.close();

    System.out.println(S.equals("ABC") ? "ARC" : "ABC");
  }
} public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    scan.close();

    System.out.println(S.equals("ABC") ? "ARC" : "ABC");
  }
} Main
import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String S = scan.next();
    scan.close();

    System.out.println(S.equals("ABC") ? "ARC" : "ABC");
  }
}