#include<stdio.h>
int main(){
    float bmi;
    scanf("%f",&bmi);
    if(bmi<18.5){
     printf("Underweight\n");
   } else if(bmi >= 18.5 && bmi <= 24.9){
        printf("Normal weight\n");
   } else if(bmi >= 25)
        printf("Overweight|n");
}
    return 0;
}