#include 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;

}