import java.util.*;
public class Main {

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

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