#include <stdio.h>
int main()
{
    double m,h,a;
    scanf("%lf%lf",&m,&h);
    a=m/(h*h);
    if(a<18.5)
        printf("Underweight");
    if(a>=18.5&&a<24)
        printf("Normal");
    if(a>=24)
    {
        printf("%.4g\n",a);
        printf("Overweight");
    }
    return 0;
}

1 2都wa了，求教谢谢~