# include<stdio.h>
int main()
{
   float a,b;
   scanf("%f %f",&a,&b);
   float c=a/(b*b);
   if(c<18.5)
    printf("Underweight");
   if(c>=18.5&&c<25)
    printf("Normal");
   else{
     
     
     
    printf("%.6g\nOverweight",c);

   }
   return 0;
}