import java.util.*;

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

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