import java.util.Scanner;

public class Labb3Upg1BMI {

    public static void main(String[] args) {

        double BMI;
        int weight;
        double length;
        String sex;
        int age;

        Scanner input = new Scanner(System.in);
        System.out.print("Input weight(KG): ");
        weight = input.nextInt();
        System.out.print("Input length(CM): ");
        length = input.nextDouble();
        System.out.print("Input sex(M/F): ");
        sex = input.nextLine();
        System.out.print("Input age(Yrs): ");
        age = input.nextInt();

        input.close();
        BMI = weight / (length * length);

double bfm = (1.2 * BMI) + (0.23 * age) - 16.2;
double bff = (1.2 * BMI) + (0.23 * age) - 5.4;

        if (sex.equals("M")){
    System.out.println("Your body fat % is: " + bfm + "%.");
        }
    else if (sex.equals("F")){
    System.out.println("Your body fat % is: " + bff +"%. ");

    }
    }
    }