#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 > 24.9)
        cout << "偏胖" << endl;
    else if (BMI >= 20.9)
        cout << "适中" << endl;
    else if (BMI >= 18.5)
        cout << "苗条" << endl;
    else
        cout << "偏瘦" << endl;

    return 0;
}