#include <stdio.h>

#include <math.h>

#define EEE 2.71828182845953581496

int p, q, r, s, t, u;

double v(double x)

{

    return (p*pow(EEE,-x)+q*sin(x)+r*cos(x)+s*tan(x)+t*x*x);

}

double f(double x,double z, double y)

{

double mid;

    while((y-z)>1e-)

    {

        mid=(z+y)/;

        if(v(mid)>x)

            z=mid+1e-;

        else

            y=mid-1e-;

    }

    return mid;

}

int main()

{

   while(~scanf("%d%d%d%d%d%d", &p, &q, &r, &s, &t, &u))

   {

       if(v()<-u||v()>-u)

       printf("No solution\n");

       else

       printf("%.4lf\n", f(-u,,));

   }

return ;

}