import java.io.*;
import java.util.*;
import java.lang.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc=new Scanner(System.in);
		String str=sc.nextLine();
	    String	str1="ABC";
		if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC");
	}
} import java.io.*; io.* java import java.util.*; util.* java import java.lang.*; lang.* java public class Main {
	public static void main (String[] args) {
		Scanner sc=new Scanner(System.in);
		String str=sc.nextLine();
	    String	str1="ABC";
		if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC");
	}
} Main public static void main (String[] args) {
		Scanner sc=new Scanner(System.in);
		String str=sc.nextLine();
	    String	str1="ABC";
		if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC");
	} main {
		Scanner sc=new Scanner(System.in);
		String str=sc.nextLine();
	    String	str1="ABC";
		if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC");
	} Scanner sc=new Scanner(System.in); sc new Scanner(System.in) String str=sc.nextLine(); str sc.nextLine() sc.nextLine sc String	str1="ABC"; str1 "ABC" if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC"); str.equals(str1) str.equals str str1 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 sc=new Scanner(System.in);
		String str=sc.nextLine();
	    String	str1="ABC";
		if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC");
	}
} public class Main {
	public static void main (String[] args) {
		Scanner sc=new Scanner(System.in);
		String str=sc.nextLine();
	    String	str1="ABC";
		if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC");
	}
} Main
import java.io.*;
import java.util.*;
import java.lang.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc=new Scanner(System.in);
		String str=sc.nextLine();
	    String	str1="ABC";
		if(str.equals(str1))
		System.out.println("ARC");
		else
		System.out.println("ABC");
	}
}