import java.util.Scanner;

public class Polynomial $\{$

public static void main$($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

double u;

double t;

u $=$ scnr$.$nextDouble$()$;

t $=-(6\mathrm{.}0*$ u $*$ u$)+(10\mathrm{.}0*$ u$)+7\mathrm{.}5$;

System.out.printf$("$t $=\%\mathrm{.}5$f$",$ t$)$;

System.out.printf$("$ when u $=\%\mathrm{.}2$f$",$ u$)$;

$\}$