include<stdio.h>

int main() {

double  t=0,w, h;
scanf("%lf %lf", &h, &w);
if (h >= 1 && h <= 2 && w >= 1 && w <= 200)
{
	t = w / (h * h);
	if (t < 18)
		printf("underweight");
	else if (t >= 18 && w / (h * h) < 25)
		printf("normal");
	else if (t >= 25 && t < 27)
		printf("overweight");
	else if(t>=27)
		printf("obese");
}
return 0;

}