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