import java.util.*;
import java.util.function.*;
import java.math.*;
public class Main {
    public static void main(String[] args){
				Scanner sc = new Scanner(System.in);
		String A = sc.next();
		
		System.out.println("ABC".equals(A) ? "ARC" : "ABC");
    }
} import java.util.*; util.* java import java.util.function.*; function.* java.util import java.math.*; math.* java public class Main {
    public static void main(String[] args){
				Scanner sc = new Scanner(System.in);
		String A = sc.next();
		
		System.out.println("ABC".equals(A) ? "ARC" : "ABC");
    }
} Main public static void main(String[] args){
				Scanner sc = new Scanner(System.in);
		String A = sc.next();
		
		System.out.println("ABC".equals(A) ? "ARC" : "ABC");
    } main {
				Scanner sc = new Scanner(System.in);
		String A = sc.next();
		
		System.out.println("ABC".equals(A) ? "ARC" : "ABC");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String A = sc.next(); A sc.next() sc.next sc System.out.println("ABC".equals(A) ? "ARC" : "ABC") System.out.println System.out System System.out "ABC".equals(A) ? "ARC" : "ABC" "ABC".equals(A) "ABC".equals "ABC" A "ARC" "ABC" String[] args args public class Main {
    public static void main(String[] args){
				Scanner sc = new Scanner(System.in);
		String A = sc.next();
		
		System.out.println("ABC".equals(A) ? "ARC" : "ABC");
    }
} public class Main {
    public static void main(String[] args){
				Scanner sc = new Scanner(System.in);
		String A = sc.next();
		
		System.out.println("ABC".equals(A) ? "ARC" : "ABC");
    }
} Main
import java.util.*;
import java.util.function.*;
import java.math.*;
public class Main {
    public static void main(String[] args){
				Scanner sc = new Scanner(System.in);
		String A = sc.next();
		
		System.out.println("ABC".equals(A) ? "ARC" : "ABC");
    }
}