double pow(double x,double y)
{
    while(y>1,y--)
        x=x*x;
    return x;
}
#include<stdio.h>
int main()
{
    float hight,weight,BMI;
    scanf("%f %f",&weight,&hight);
    BMI=weight/pow(hight/100,2);
    printf("%.2f",BMI);
    return 0;
}