import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
      Scanner scanner = new Scanner(System.in);
      String input = scanner.nextLine();

      if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      }
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
      Scanner scanner = new Scanner(System.in);
      String input = scanner.nextLine();

      if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      }
	}
} Main public static void main(String[] args) {
      Scanner scanner = new Scanner(System.in);
      String input = scanner.nextLine();

      if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      }
	} main {
      Scanner scanner = new Scanner(System.in);
      String input = scanner.nextLine();

      if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      }
	} Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String input = scanner.nextLine(); input scanner.nextLine() scanner.nextLine scanner if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      } input.equals("ABC") input.equals input "ABC" {
        System.out.println("ARC");
      } System.out.println("ARC") System.out.println System.out System System.out "ARC" {
        System.out.println("ABC");
      } System.out.println("ABC") System.out.println System.out System System.out "ABC" String[] args args public class Main {
	public static void main(String[] args) {
      Scanner scanner = new Scanner(System.in);
      String input = scanner.nextLine();

      if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      }
	}
} public class Main {
	public static void main(String[] args) {
      Scanner scanner = new Scanner(System.in);
      String input = scanner.nextLine();

      if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      }
	}
} Main
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
      Scanner scanner = new Scanner(System.in);
      String input = scanner.nextLine();

      if(input.equals("ABC")) {
        System.out.println("ARC");
      }
      else {
        System.out.println("ABC");
      }
	}
}