#include <iostream>
using namespace std;

int main() {
   
    double weight;
    double height;
    double BMI;
    cin >> weight;
    cin >> height;
    BMI=weight/(height*height);
    if (BMI<18.5){
        cout<<"偏瘦";
    }
    else{
        if(BMI<20.9){
        cout<<"苗条";
        }
        else{
            if(BMI<=24.9){
            cout<<"适中";
            }
            else {cout<<"偏胖";}
        }
    }
    

    return 0;
}