There is a function: f(x) = 2x^5 + 3x^4 + 4x^3 + 5x^2 - kx. In short, your task is very simple: every time give you an integer k, calculate the minimun f(t), while 0<=t<=100.

For each case there is an integer k, k can be very large but I promise it is no more than the range of int.

For each case, print the minimun number for a given function, keep three decimal points please.