import java.util.*;
class Main {
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        String str = scan.next();
        String str2 = "ABC";
        if (str.equals(str2)){
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
        }
        } import java.util.*; util.* java class Main {
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        String str = scan.next();
        String str2 = "ABC";
        if (str.equals(str2)){
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
        }
        } Main public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        String str = scan.next();
        String str2 = "ABC";
        if (str.equals(str2)){
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
        } main {
        Scanner scan = new Scanner(System.in);
        String str = scan.next();
        String str2 = "ABC";
        if (str.equals(str2)){
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
        } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) String str = scan.next(); str scan.next() scan.next scan String str2 = "ABC"; str2 "ABC" if (str.equals(str2)){
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        } str.equals(str2) str.equals str str2 {
            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
import java.util.*;
class Main {
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        String str = scan.next();
        String str2 = "ABC";
        if (str.equals(str2)){
            System.out.println("ARC");
        } else {
            System.out.println("ABC");
        }
        }
        }