using System;
public class Hello{
    public static void Main(){
        
        var inpt = Console.ReadLine().Split();
        string want = inpt[0];
        int num=0;
        
        var MrMax = Console.ReadLine().Split();
        for(int i=0;i<MrMax.Length;i++){
            if(MrMax[i]==want)
                num++;
        }
        var MaxValu = Console.ReadLine().Split();
        for(int i=0;i<MaxValu.Length;i++){
            if(MaxValu[i]==want)
                num+=2;
        }
        
        switch(num){
            case 0:
                Console.WriteLine(-1);break;
            case 1:
                Console.WriteLine("MrMax");break;
            case 2:
                Console.WriteLine("MaxValu");break;
            case 3:
                Console.WriteLine("MrMaxValu");break;
        }
        
    }
}