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