#include <iostream>
using namespace std;

int main() {

    double weight;
    double height;
    double bmi = 0;

    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;
}