import java.util.*;
import java.io.*;

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

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