import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入您的体重，单位（kg）：");
        double weight = scanner.nextDouble();
        System.out.print("请输入您的身高，单位（m）：");
        double height = scanner.nextDouble();
        double bmi = weight / (height * height);
        System.out.printf("您的体质指数BMI为：%.2f\n", bmi);
        if (bmi < 18.5) {
            System.out.println("您的体重过轻");
        } else if (bmi >= 18.5 && bmi <= 25) {
            System.out.println("您的体重正常");
        } else if (bmi > 25 && bmi <= 28) {
            System.out.println("您的体重过重");
        } else if (bmi > 28 && bmi <= 32) {
            System.out.println("您的体重肥胖");
        } else {
            System.out.println("您的体重非常肥胖");
        }
    }
}