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 bmi = weight/(height*height);
if(bmi<18.5){
System.out.println("偏瘦");
}else if(bmi<20.9){
System.out.println("苗条");
}else if(bmi<24.9){
System.out.println("适中");
}else if(bmi>=24.9){
System.out.println("偏胖");
}else{
System.out.println("输入错误");
}
}
}