import java.util.Scanner;

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

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