3. Let the sequence $\left(x_{n}\right)_{n \geq 1}, x_{1}=\frac{1}{2014}, x_{n+1}=x_{n}\left(1+x_{1}+x_{1}^{2}+\ldots+x_{1}^{n}\right)$, for any $n \geq 1$. We denote $S=\frac{x_{1}}{x_{2}}+\frac{x_{2}}{x_{3}}+\ldots+\frac{x_{2014}}{x_{2015}}$. Find $[S]$.