#include <iostream>
using namespace std;

int main() {
   
    double weight;
    double height;

    cin >> weight;
    cin >> height;

    double BMI = weight / (height * height);
    if(BMI < 18.5)
    cout <<"偏瘦"<<endl;
    else if(BMI >= 18.5 && BMI < 20.9)
    cout <<"苗条"<<endl;
    else if(BMI >= 20.9 && BMI < 24.9)
    cout <<"适中"<<endl;
    else
    cout <<"偏胖"<<endl;
    return 0;
}