import java.util.Scanner;

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

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