#include<stdio.h>
struct bmi
{
    int a;
};
int main()
{
    int bmi;
    struct bmi a;
    bmi = float(a);
    scanf("%f",&bmi.a);


if bmi.a < 18.5:
    print("Underweight")
elif bmi.a <= 24.9:
    print("Normal weight")
else:
    print("Overweight")

}