رسالة import math as m

import math as m a,b,c,d,x=map(float,input().split()) y=(a*x*x+b*x+c)/(x*a*a*a+a*a+a(b-c))+m.cos(m.fabs((a*x+b)/(c*x+d+2c))) print(f'{y:.2f}')