import java.util.Scanner;

class If
{
  public static void main (String[] args){
      double v, t, wci;
      Scanner scan = new Scanner(System.in);

      System.out.println("Please enter the wind speed in miles per hour ");
      v = scan.nextDouble();

      System.out.println("Please enter the temperature in Fahrenheit");
      t = scan.nextDouble();

      wci = 0.0;

      if (0 <= v)
          if (v <= 4)
          wci = t;
      else
          if (v >= 45)
              wci = (1.6 * t) - 55;
          else
              wci = 91.4 + (91.4 - t) * (0.0203 * v - 0.304 * (v*Math.sqrt(0.5)) - 0.474);

    System.out.println("The wci is: " + wci);

 }
}