import java.util.Scanner;

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

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