#include <iostream>
using namespace std;
int main() {
double weight;
double height;
cin >> weight;
cin >> height;
// write your code here......
double BMI = weight / (height * height);//BMI计算公式
if (BMI < 18.5)
{
cout << "偏瘦" << endl;
}
else if (BMI >= 18.5 && BMI <20.9)
{
cout << "苗条" << endl;
}
else if (BMI >= 20.9 && BMI <= 24.9)
{
cout << "适中" << endl;
}
else
{
cout << "偏胖" << endl;
}
return 0;
}

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