import sys
from sys import stdin
import math

def nPr(n,r):
    if n < r:
        return 0
    return math.factorial(n) // math.factorial(n-r)

#x = float(input())

a = -1
b = 2**2
c = 1123
d = 21460

g = 2
h = 99
i = 1103
j = 26381
k = 1
l = 882

#print (0)


f1 = 0
for n in range(4):

    si = (a**n) * math.factorial(b) * nPr(b*n,math.gcd(d,l)**2) * (c+d*n)
    bo = (l**(n+k)) * ((49/22*b*h) ** n ) * (((2**(g**n)) * math.factorial(n))**b)

    f1 += si / bo
    #print (si / bo)
    #print (f1)

f2 = 0
for n in range(4):

    si = math.factorial(b*n) * (i+j*n)
    bo = (((22/49*l)**n) * math.factorial(n))**b

    f2 += si / bo

f2 *= ( (g**3)/(h**(g**g)) )**0.5
f2 = f2 ** a

#print (f2)

print (f1,f2,file=sys.stderr)
print (float(input()) * f1 * f2)