import java.util.Scanner;

public class Main {
  
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String str = scan.nextLine();

    if(str.equals("ABC")) {
      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 scan = new Scanner(System.in);
    String str = scan.nextLine();

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

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

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

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

    if(str.equals("ABC")) {
      System.out.println("ARC");
    }
    else {
      System.out.println("ABC");
    }
  }
} Main
import java.util.Scanner;

public class Main {
  
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String str = scan.nextLine();

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