import java.util.Scanner;

public class Main{
 public static void main(String[] args) {
   Scanner kbd =new Scanner(System.in);
   String n=kbd.next();
 
 if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 }
}
} import java.util.Scanner; Scanner java.util public class Main{
 public static void main(String[] args) {
   Scanner kbd =new Scanner(System.in);
   String n=kbd.next();
 
 if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 }
}
} Main public static void main(String[] args) {
   Scanner kbd =new Scanner(System.in);
   String n=kbd.next();
 
 if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 }
} main {
   Scanner kbd =new Scanner(System.in);
   String n=kbd.next();
 
 if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 }
} Scanner kbd =new Scanner(System.in); kbd new Scanner(System.in) String n=kbd.next(); n kbd.next() kbd.next kbd if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 } n.compareTo("ABC")==0 n.compareTo("ABC") n.compareTo n "ABC" 0 {
   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 kbd =new Scanner(System.in);
   String n=kbd.next();
 
 if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 }
}
} public class Main{
 public static void main(String[] args) {
   Scanner kbd =new Scanner(System.in);
   String n=kbd.next();
 
 if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 }
}
} Main
import java.util.Scanner;

public class Main{
 public static void main(String[] args) {
   Scanner kbd =new Scanner(System.in);
   String n=kbd.next();
 
 if(n.compareTo("ABC")==0){
   System.out.println("ARC");
 }else{
    System.out.println("ABC");
 }
}
}
