import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC";
        System.out.println(S);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC";
        System.out.println(S);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC";
        System.out.println(S);
    } main {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC";
        System.out.println(S);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC"; S sc.nextLine().equals("ABC") ? "ARC" : "ABC" sc.nextLine().equals("ABC") sc.nextLine().equals sc.nextLine() sc.nextLine sc "ABC" "ARC" "ABC" System.out.println(S) System.out.println System.out System System.out S String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC";
        System.out.println(S);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC";
        System.out.println(S);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String S = sc.nextLine().equals("ABC") ? "ARC" : "ABC";
        System.out.println(S);
    }
}
