import java.util.Scanner;
import java.util.Arrays;
class Main{
public static void main(String[] args){
Scanner scan = new Scanner(System.in);
 
String S = scan.next();

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

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

  if ("ABC".equals(S)){
    System.out.println("ARC");
  }
  else{
  System.out.println("ABC");
  }
 } main {
Scanner scan = new Scanner(System.in);
 
String S = scan.next();

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

  if ("ABC".equals(S)){
    System.out.println("ARC");
  }
  else{
  System.out.println("ABC");
  }
 }
}