#include using namespace std;

int main() {

double weight;
double height;

cin >> weight;
cin >> height;
double c=0;
c=weight/(height*height);//体重/身高平方
// write your code here......
if(c<18.5)
    printf("偏瘦");
    else if(c>=18.5&&c<20.9)
        printf("苗条");
        else if(c>=20.9&&c<=24.9)
            printf("适中");
            else
                printf("偏胖");
return 0;

}