#include<stdio.h>
struct pradeep
{
    float n;
};
int main()
{
    struct pradeep find;
    scanf("%d",&find.n);
    if(find.n<18.5)
    {
        printf("Underweight");
    }
    else if(18.5<find.n && find.n>24.9)
    {
        printf("Normel weight");
    }
    else if(find.n<25)
    {
        printf("Overweight");
    }
}