int main()
{
    int a = 0;
    float b = 0;
    while ((scanf ("%d %f",&a,&b)) != EOF)
    {
        b = b/100;
        float BMI = 1.0*a/(b*b);
        if (BMI < 18.5)
        {
            printf ("Underweight\n");
        }
        else if (BMI <= 23.9 && BMI >= 18.5)
        {
            printf ("Normal\n");
        }
        else if (BMI <= 27.9 && BMI > 23.9)
        {
            printf ("Overweight\n");
        }
        else 
        {
            printf ("Obese\n");
        }
    }
    return 0;
}