#include<stdio.h>
int main()
{
    float m,h;
    scanf("%f %f",&m,&h);
    if(m/h/h<18.5)
        printf("Underweight");
    if(18.5<=m/h/h&&m/h/h<24)
        printf("Normal");
    if(m/h/h>=24)
        printf("%4f\nOverweight", m / h / h);
    return 0;
}