#include <cstdio>
#include <cmath>
using namespace std;
int main()
{
int T,p,q,r,s,t,u;
double lo,hi,mi,f;
while(scanf("%d %d %d %d %d %d",&p,&q,&r,&s,&t,&u)==6)
{
if(p*exp(-1)+q*sin(1)+r*cos(1)+s*tan(1)+t+u>1e-9 || p+r+u<0)
{
printf("No solution\n");
continue;
}
lo=0.0; hi=1.0;
for(int i=0;i<30;i++){
mi=(lo+hi)/2;
f=p*exp(-mi)+q*sin(mi)+r*cos(mi)+s*tan(mi)+t*mi*mi+u;
if(f>0) lo=mi;
else hi=mi;
}
printf("%.4f\n",lo);
}
return 0;
}
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