#!/usr/bin/env python

#This simulator simply evaluates & returns value of the following function: 
#y = f(x) = -x^4 + 150x^3 - 100x^2 - 75x - 25

import math
import sys
import time

#The sleep interval is the overhead for starting this bulky simulator!
time.sleep(20)

#Get the value of x from the command-line.
x = float(sys.argv[1])

#Evaluate f(x).
A = math.pow(x,4)
B = math.pow(x,3)
C = math.pow(x,2)
D = x
y = -A + 150*B - 100*C - 75*D - 25

#Write the value of f(x).
sys.stdout.write(str(y)+"\n")