#include<bits stdc++.h>
using namespace std;
int main()
{       double a,b,c,d,l,r,R,L;
        scanf("%lf%lf%lf%lf%lf%lf", &a, &b, &c, &d, &l, &r);
        if(a!=0)
        {R=c*r/a+(d/a-b*c/(a*a))*log(fabs(a*r+b));
        L=c*l/a+(d/a-b*c/(a*a))*log(fabs(a*l+b));}
        else
        {R=((c*r*r)/(2*b)+(d*r)/b);
        L=((c*l*l)/(2*b)+(d*l)/b);    }
//        cout<<(a*r+b)<<" "<<(a*l+b);         printf("%.6lf\n",(r-l));         return 0; }< pre></(a*r+b)<<" "<<(a*l+b);></bits>