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);
}
}