#include <iostream>
using namespace std;
int main() {
double weight;
double height;
cin >> weight;
cin >> height;
// write your code here......
double 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;
}