import java.util.*;

public class Main {
    public static void main (String[] args) {
        Scanner s = new Scanner(System.in);
        String str = s.next();

        if (str.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 s = new Scanner(System.in);
        String str = s.next();

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

        if (str.equals("ABC")) System.out.println("ARC");
        else System.out.println("ABC");
    } main {
        Scanner s = new Scanner(System.in);
        String str = s.next();

        if (str.equals("ABC")) System.out.println("ARC");
        else System.out.println("ABC");
    } Scanner s = new Scanner(System.in); s new Scanner(System.in) String str = s.next(); str s.next() s.next s if (str.equals("ABC")) System.out.println("ARC");
        else System.out.println("ABC"); str.equals("ABC") str.equals str "ABC" 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 s = new Scanner(System.in);
        String str = s.next();

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

        if (str.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 s = new Scanner(System.in);
        String str = s.next();

        if (str.equals("ABC")) System.out.println("ARC");
        else System.out.println("ABC");
    }
} 