import java.util.*;
import java.lang.Double;

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

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

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

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

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

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

        }
      } Main
import java.util.*;
import java.lang.Double;

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

        }
      }
