// editor2
#include<stdio.h>
struct Villager{
    float bmi;
};
void categorize_bmi(float bmi_value){
    if(bmi_value<18.5)
    {
        printf("Underweight\n");
    }
    else if(bmi_value>=18.5 && bmi_value<=24.9)
    {
        printf("Normal weight\n");
    }
    else
    {
        printf("Over weight\n");
    }
}
int main()
{
    struct villager v.bmi;
    if(scanf("%f",&v.bmi)!=1)
    {
        return 0;
    }
    if (v.bmi<0.0f||v.bmi>100.0f)
    {
        return 0;
    }
    categorize_bmi(v.bmi);
    return 0;
}