Description

For the polynomial $f(x)=ax^3+bx^2+cx+d$ and given values of $a$, $b$, $c$, $d$, and $x$, calculate the value of $f(x)$, rounded to 7 decimal places.

Input Format

Input consists of a single line with 5 real numbers: $x$, and the parameters $a$, $b$, $c$, and $d$. Each number is a double-precision floating-point number with an absolute value not exceeding 100. The numbers are separated by spaces.

Output Format

Output a real number representing the value of $f(x)$, rounded to 7 decimal places.

Sample

2.31 1.2 2 2 3

33.0838692