int main()
{
	int n,a,a1,b,b1,c,c1,a3,b3,c3;
	cin>>n>>a>>a1>>b>>b1>>c>>c1;
	double a2,b2,c2;
	a2=ceil(n/a);
	a3=a1*a2;
	b2=ceil(n/b);
	b3=b1*b2;
	c2=ceil(n/c);
	c3=c1*c2;
	if((a3<b3)&&(a3<c3))
     cout<<a3;
    else
     if((b3<a3)&&(b3<c3))
      cout<<b3;
     else
      cout<<c3;
    return 0;
}```