import java.util.Scanner;
public class Main {
    public static void main(String[] args) throws Exception {
        Scanner stdIn= new Scanner(System.in);
        String x = stdIn.next();
        if(x.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) throws Exception {
        Scanner stdIn= new Scanner(System.in);
        String x = stdIn.next();
        if(x.equals("ABC")){
            System.out.println("ARC");
        }else{
            System.out.println("ABC");
        }
    }
} Main public static void main(String[] args) throws Exception {
        Scanner stdIn= new Scanner(System.in);
        String x = stdIn.next();
        if(x.equals("ABC")){
            System.out.println("ARC");
        }else{
            System.out.println("ABC");
        }
    } main {
        Scanner stdIn= new Scanner(System.in);
        String x = stdIn.next();
        if(x.equals("ABC")){
            System.out.println("ARC");
        }else{
            System.out.println("ABC");
        }
    } Scanner stdIn= new Scanner(System.in); stdIn new Scanner(System.in) String x = stdIn.next(); x stdIn.next() stdIn.next stdIn if(x.equals("ABC")){
            System.out.println("ARC");
        }else{
            System.out.println("ABC");
        } x.equals("ABC") x.equals x "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) throws Exception {
        Scanner stdIn= new Scanner(System.in);
        String x = stdIn.next();
        if(x.equals("ABC")){
            System.out.println("ARC");
        }else{
            System.out.println("ABC");
        }
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner stdIn= new Scanner(System.in);
        String x = stdIn.next();
        if(x.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) throws Exception {
        Scanner stdIn= new Scanner(System.in);
        String x = stdIn.next();
        if(x.equals("ABC")){
            System.out.println("ARC");
        }else{
            System.out.println("ABC");
        }
    }
}
