import java.util.Scanner;

 public class Solution
 {
     public static void main(String[] args)
     {
         Scanner input = new Scanner(System.in);

         System.out.print("Enter the temperature in Fahrenheit: ");
         double temperature = input.nextDouble();

         System.out.print("Enter the wind speed miles per hour: ");
         double windSpeed = input.nextDouble();

         input.close();

         if(temperature >= -58 && temperature <= 41 && windSpeed >= 2)
         {
             double windChillIndex = 35.74 + 0.6215 * temperature - 35.75 * Math.pow(windSpeed, 0.16)
             + 0.4275 * temperature * Math.pow(windSpeed, 0.16);
             System.out.println("The wind chill index is " + windChillIndex);
         }
         else
             System.out.println("The input value is invalid");
     }
 }