import java.util.Scanner;

public class Assignment2 {
    private static double w1;
    private static double w2;
    private static double BMI;

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("下面开始计算体重指数");
        System.out.println("请输入你的身高(cm|m)");
        double height = scanner.nextDouble();
        System.out.println("请输入体重(Kg)");
        double weight = scanner.nextInt();
        if (height != (int) height) {
            BMI = weight / Math.pow(height, 2);
            System.out.printf("你的体重指数(BMI)为%.2f%n", BMI);
            w1 = Math.pow(height, 2) * 18.5;
            w2 = Math.pow(height, 2) * 25;
            A();
        } else {
            BMI = weight / Math.pow(height / 100, 2);
            System.out.printf("你的体重指数(BMI)为%.2f%n", BMI);
            w1 = Math.pow(height / 100, 2) * 18.5;
            w2 = Math.pow(height / 100, 2) * 25;
            A();
        }
    }

    private static void A() {
        if (BMI <= 18.5) {
            System.out.println("体重过轻了");
            System.out.printf("建议体重为%.2fKg~%.2fKg", w1, w2);
        } else if (BMI > 18.5 && BMI <= 25) {
            System.out.println("恭喜你，你的体重正常");
            System.out.printf("请继续保持%.2fKg~%.2fKg", w1, w2);
        } else if (BMI > 25 && BMI <= 28) {
            System.out.println("你的体重偏胖");
            System.out.printf("建议体重为%.2fKg~%.2fKg", w1, w2);
        } else if (BMI > 28 && BMI <= 32) {
            System.out.println("你的体重肥胖");
            System.out.printf("建议体重为%.2fKg~%.2fKg", w1, w2);
        } else if (BMI > 32) {
            System.out.println("你的体重非常肥胖");
            System.out.printf("建议体重为%.2fKg~%.2fKg", w1, w2);
        }
    }
}