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();
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{
System.out.println("偏胖");
}
}
}

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