x = gets.to_f

a = -1
b = 2**2
c = 1123
d = 21460
g = 3
h = 99
i = 1103
j = 26390
k = 1
l = 882

def nPk(n, k)
  fact(n) / fact(n - k)
end

def fact(n)
  Math.gamma(n + 1)
end

N = 20
N1 = N
N2 = N

seq1 = (0..N1).sum { |n|
  (a**n * fact(b) * nPk(b * n, [0, b * n - d.gcd(l)**2].max) * (c + d * n)) / (l**(n + k) * (49 * b * h / 22.0)**n * ((2**2)**n * fact(n))**b)
}

seq2 = (Math.sqrt(g**3 / h.to_f**g**g) * (0..N2).sum { |n|
  (fact(b * n) * (i + j * n)) / ((22.0 * l / 49)**n * fact(n))**b
})**a

puts x * seq1 * seq2