(use scheme.list)
(use srfi.217)

(define yuki975
  (let*
    (
      (x (read))
      (n (read))
      (m (read))
      (_ (read-line))
      (mrmax (list->iset (list-tabulate n (^_ (read)))))
      (maxvalu (list->iset (list-tabulate m (^_ (read)))))
      (mr-has-x (iset-member mrmax x 0))
      (va-has-x (iset-member maxvalu x 0))
    )
    (display
      (cond
        ((and (zero? mr-has-x) (zero? va-has-x))
          "-1\n"
        )
        ((zero? mr-has-x)
          "MaxValu\n"
        )
        ((zero? va-has-x)
          "MrMax\n"
        )
        (else
          "MrMaxValu\n"
        )
      )
    )
  )
)