#include <iostream>

std::string getBodyType(double weight, double height) {
    double bmi = weight / (height * height);

    if (bmi < 18.5) {
        return "偏瘦";
    } else if (bmi >= 18.5 && bmi < 20.9) {
        return "苗条";
    } else if (bmi >= 20.9 && bmi < 24.9) {
        return "适中";
    } else {
        return "偏胖";
    }
}

int main() {
    double weight, height;

    std::cin >> weight;

    std::cin >> height;

    std::string bodyType = getBodyType(weight, height);
    std::cout  << bodyType << std::endl;

    return 0;
}