#include <iostream>
#include <cmath>
using namespace std;

int main() {
   
    double weight;
    double height;
    double BMI = 0.0;

    cin >> weight;
    cin >> height;

    // write your code here......
    BMI = weight/(pow(height,2));
    if(BMI > 0 && BMI < 18.5)
    {
        cout<<"偏瘦";
    }
    else if(BMI >=18.5 && BMI < 20.9)
    {
        cout<<"苗条";
    }
    else if(BMI >= 20.9 && BMI <= 24.9)
    {
        cout<<"适中";
    }
    else
    {
        cout<<"偏胖";
    }

    return 0;
}