#include using namespace std;

int main() {

double weight;
double height;
float BMI;
cin >> weight;
cin >> height;
// write your code here......
BMI = weight/(height*height);
if(BMI<18.5){
    cout<<"偏瘦"<<endl;
}
else if(BMI<20.9){
    cout<<"苗条"<<endl;
}
else if(BMI<24.9){
    cout<<"适中"<<endl;
}
else{
    cout<<"偏胖"<<endl;
}
return 0;

}