(define (System.out.println x)
  (begin
    (display x)
    (newline)
  )
)

(let (
      (N (modulo (read) 10))
      (M (read))
     )
  (if (= M 0)
      (System.out.println 1)
      (let (
            (foo (modulo M 12))
           )
        (if (= foo 0)
            (System.out.println (modulo (expt N 4) 10))
            (System.out.println (modulo (expt N M) 10))
        )
      )
  )
)