(define (fast-fibo i m)
  (define (helper n)
    (if (zero? n)
      (cons 0 1)
      (let*
        (
          (result (helper (quotient n 2)))
          (a (car result))
          (b (cdr result))
          (md (exact->inexact m))
        )
        (if (even? n)
          (cons (modulo (* a (- (* 2 b) a)) md)
                (modulo (+ (* a a) (* b b)) md))
          (cons (modulo (+ (* a a) (* b b)) md)
                (modulo (* b (+ (* 2 a) b)) md))
        )
      )
    )
  )
  (inexact->exact (car (helper i)))
)

(define yuki526 (display (fast-fibo (- (read) 1) (read))))