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

int main() {
    double weight;
    double height;
    cin >> weight;
    cin >> height;
    double x= pow(height,2);
    if(weight/x<=18.5)
        cout<<"偏瘦";
    else if(weight/x>=18.5&&weight/x<20.9)
        cout <<"苗条";
    else if (weight/x>=20.9&&weight/x<=24.9)
        cout <<"适中";
    else
        cout <<"偏胖";
    return 0;
}