#include <stdio.h>
#include <stdlib.h>
#include <math.h>
double f(double x,double y,double z);
int main()
{
//system("chcp 1251");
double a,x,b,k,h,c,S;
scanf("%lf%lf%lf%lf%lf%lf",&a
,&b
,&c
,&x
,&k
,&h
); S=(f(a,x,b)*f(k,h,c));
printf("Відповідь = %-10.2lf",S
); return 0;
}
double f(double d,double y,double m){
return (exp(-d
*y
))/(d
*(4*d
*y
+m
)); }
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