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......
        double result = weight / (height * height);
        if(result < 18.5){
            System.out.println("偏瘦");
        }else if(result >= 18.5 && result < 20.9){
            System.out.println("苗条");

        }else if(result >= 20.9 && result <= 24.9){
            System.out.println("适中");

        }else{
            System.out.println("偏胖");

        }
    }
}