#include <stdio.h>

int main() {
    float a, b, BMI = 0.0;
    while (scanf("%f %f", &a, &b) != EOF) {
        BMI = a/(b*b/10000.0);
        if (BMI < 18.5) {
            printf("Underweight\n");
        } else if (BMI < 23.9) {
            printf("Normal\n");
        } else if (BMI < 27.9) {
            printf("Overweight\n");
        } else {
            printf("Obese\n");
        }

    }
    return 0;
}