def main():
    apoi = [int(x) for x in input().split()]
    mrmax = [int(x) for x in input().split()]
    maxvalu = [int(x) for x in input().split()]

    if apoi[0] in mrmax and maxvalu:
        print('MrMaxValu')
    elif apoi[0] in mrmax:
        print('MrMax')
    elif apoi[0] in maxvalu:
        print('MaxValu')
    else:
        print('-1')


if __name__ == '__main__':
    main()