import java.util.Scanner;

public class BMI {

	public static void main(String [] args) {

	Scanner input = new Scanner (System.in);

	System.out.print("Enter your weight (kg): ");
	   double weight = input.nextDouble();

	System.out.print("Enter your height (m): ");
	   double height = input.nextDouble();

	double bmi = weight/(height*height);

	double low_normal = 18.5 * (height*height);

	double high_normal = 25 * (height*height);

	String result = "A";
	double gainlose = 0;

	if (bmi < 15){
	result = "extremely underweight";
	gainlose = low_normal - weight;
}
	else if (15.0 <= bmi && bmi < 18.5){
	result = "underweight";
	gainlose = low_normal - weight;
}
	else if (18.5 <= bmi && bmi < 25.0){
	result = "normal weight";
}
	else if (bmi <= 30){
	result = "overweight";
	gainlose = weight - high_normal;
}
	else if (bmi <= 35.0 ){
	result = "obese";
	gainlose = weight - high_normal;
}
	else if (bmi > 35){
	result = "extremely obese";
	gainlose = weight - high_normal;
}
	if (bmi < 18.5)
	System.out.printf("Your BMI is %.2f and that mean %s you have to gain %.2f%n",bmi,result,gainlose);

	else if (18.5 <= bmi && bmi < 25.0)
	System.out.printf("Your BMI is %.2f and that mean %s%n",bmi,result);

	else if (bmi > 25)
	System.out.printf("Your BMI is %.2f and that mean %s you have to lose %.2f%n",bmi,result,gainlose);




	}

}