#include <stdio.h>

int main() {
    int a, b;
    while (scanf("%d %d", &a, &b) != EOF) { 
        double c=a/(b*b/10000.0);
        if(c<18.5)
        {
            printf("Underweight");
        }
        else if(c>=18.5&&c<=23.9)
        {
            printf("Normal");
        }
        else if(c>23.9&&c<=27.9)
        {
            printf("Overweight");
        }
        else{
            printf("Obese");
        }
        printf("\n");
    }
    return 0;
}