import java.util.*;

class Main{
	public static void main(String[] $){
		var s=new Scanner(System.in);
		int t=s.nextInt(),n=s.nextInt();
		s.next();

		var a=s.tokens().limit(n).mapToInt(Integer::parseInt).anyMatch(i->i==t)?1:0;
		var b=s.tokens().mapToInt(Integer::parseInt).anyMatch(i->i==t)?2:0;

		String[] q= {"-1","MrMax","MaxValu","MrMaxValu"};
		System.out.println(q[a+b]);
	}
}