import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
 
        String F1= scanner.next();
        String S1= scanner.next();
        String F2= scanner.next();
        String S2= scanner.next();
        if(S1.equals(S2)){
            System.out.println("ARE Brothers");
        }
        else{
            System.out.println("NOT");
        }
 
 
        scanner.close();
 
    }
}
 

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YWxpCmFobWVkCmFvcwphaG1lZA==

ali
ahmed
aos
ahmed