import java.util.Scanner;

public class Main {
    static int n = 0;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();

        if (a.equals("ABC")) {
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    static int n = 0;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();

        if (a.equals("ABC")) {
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
    }
} Main static int n = 0; n 0 public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();

        if (a.equals("ABC")) {
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();

        if (a.equals("ABC")) {
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String a = sc.nextLine(); a sc.nextLine() sc.nextLine sc if (a.equals("ABC")) {
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        } a.equals("ABC") a.equals a "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 {
    static int n = 0;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();

        if (a.equals("ABC")) {
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
    }
} public class Main {
    static int n = 0;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();

        if (a.equals("ABC")) {
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
    }
} Main
import java.util.Scanner;

public class Main {
    static int n = 0;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();

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