import java.util.Scanner;
public class Main {

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

		if(s.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 scan = new Scanner(System.in);
		String s = scan.next();

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

	}

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

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

	} main {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();

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

	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String s = scan.next(); s scan.next() scan.next scan if(s.equals("ABC")) {
			System.out.println("ARC");
		}else {
			System.out.println("ABC");
		} s.equals("ABC") s.equals s "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 scan = new Scanner(System.in);
		String s = scan.next();

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

	}

} public class Main {

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

		if(s.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 scan = new Scanner(System.in);
		String s = scan.next();

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

	}

}