import java.util.*;

public class Main
{
	public static  void main(String args[])
	{
		Scanner scan = new Scanner(System.in);
		String w1 = scan.nextLine();
		String w2="ABC";
		if(w1.equals(w2))
		{
			System.out.println("ARC");
		}
		else
			System.out.println("ABC");
	}
} import java.util.*; util.* java public class Main
{
	public static  void main(String args[])
	{
		Scanner scan = new Scanner(System.in);
		String w1 = scan.nextLine();
		String w2="ABC";
		if(w1.equals(w2))
		{
			System.out.println("ARC");
		}
		else
			System.out.println("ABC");
	}
} Main public static  void main(String args[])
	{
		Scanner scan = new Scanner(System.in);
		String w1 = scan.nextLine();
		String w2="ABC";
		if(w1.equals(w2))
		{
			System.out.println("ARC");
		}
		else
			System.out.println("ABC");
	} main {
		Scanner scan = new Scanner(System.in);
		String w1 = scan.nextLine();
		String w2="ABC";
		if(w1.equals(w2))
		{
			System.out.println("ARC");
		}
		else
			System.out.println("ABC");
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String w1 = scan.nextLine(); w1 scan.nextLine() scan.nextLine scan String w2="ABC"; w2 "ABC" if(w1.equals(w2))
		{
			System.out.println("ARC");
		}
		else
			System.out.println("ABC"); w1.equals(w2) w1.equals w1 w2 {
			System.out.println("ARC");
		} System.out.println("ARC") System.out.println System.out System System.out "ARC" 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 w1 = scan.nextLine();
		String w2="ABC";
		if(w1.equals(w2))
		{
			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 w1 = scan.nextLine();
		String w2="ABC";
		if(w1.equals(w2))
		{
			System.out.println("ARC");
		}
		else
			System.out.println("ABC");
	}
} Main
import java.util.*;

public class Main
{
	public static  void main(String args[])
	{
		Scanner scan = new Scanner(System.in);
		String w1 = scan.nextLine();
		String w2="ABC";
		if(w1.equals(w2))
		{
			System.out.println("ARC");
		}
		else
			System.out.println("ABC");
	}
}