import java.util.Scanner;

class Main{
    public static void main(String[] args){

        Scanner scanner = new Scanner(System.in);

        String S = scanner.next();
        String T = "ABC";

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

    }
} import java.util.Scanner; Scanner java.util class Main{
    public static void main(String[] args){

        Scanner scanner = new Scanner(System.in);

        String S = scanner.next();
        String T = "ABC";

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

    }
} Main public static void main(String[] args){

        Scanner scanner = new Scanner(System.in);

        String S = scanner.next();
        String T = "ABC";

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

    } main {

        Scanner scanner = new Scanner(System.in);

        String S = scanner.next();
        String T = "ABC";

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

    } Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String S = scanner.next(); S scanner.next() scanner.next scanner String T = "ABC"; T "ABC" if(S.equals(T)){
            System.out.println("ARC");
        }else{
            System.out.println("ABC");
        } S.equals(T) S.equals S T {
            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
import java.util.Scanner;

class Main{
    public static void main(String[] args){

        Scanner scanner = new Scanner(System.in);

        String S = scanner.next();
        String T = "ABC";

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

    }
}