import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double height = scanner.nextDouble();
        double weight = scanner.nextDouble();

        //write your code here......
        String result = "";
        double bmi = weight / (height * height);

        if (bmi < 18.5) {
            result = "偏瘦";
        } else if (bmi >= 18.5 && bmi < 20.9) {
            result = "苗条";
        } else if (bmi >= 20.9 && bmi <= 24.9) {
            result = "适中";
        } else if (bmi > 24.9) {
            result = "偏胖";
        }

        System.out.println(result);
    }
}