import java.util.*;
import java.lang.*;
public class Main
{
public static void main
(String[] args
) {
try { double d, x;
Scanner input
= new Scanner
(System.
in); d = input.nextDouble();
x = d - 85528.00;
if (d <= 3091.00)
else
if (d <= 85528.00)
System.
out.
printf("%.2f",
(0.18 * d
) - 556.02); else
System.
out.
printf("%.2f",
(0.32 * x
) + 14839.02); }
return;
}
}
}
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