#include<stdio.h> 
int main()
{
	float m,h,b,c;
	m>=40&&m<=120;
	h>=1.4&&h<=2.0;
	scanf("%f%f",&m,&h);
	b=m/h/h;
	if(b<18.5)
	printf("Underweight");
	else if(b>=18.5&&b<24)
	printf("Normal");
	else if(b>=24)
	printf("%.6f\nOverweight",b);
	return 0;
}