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

