3. Find all positive solutions of the system of equations.

$$
\left\{\begin{array}{c}
x_{1}+x_{2}=4 x_{3}^{2} \\
x_{2}+x_{3}=4 x_{4}^{2} \\
\cdots \\
x_{2015}+x_{2016}=4 x_{2017}^{2} \\
x_{2016}+x_{2017}=4 x_{1}^{2} \\
x_{2017}+x_{1}=4 x_{2}^{2}
\end{array}\right.
$$

In your answer, specify the value of \( x_{1} \). If there are multiple correct answers, list them in any order separated by a semicolon.
Answer: $0.5\|0.5\| 1 / 2$

## Examples of answer notation:  45  4.5  $4 / 5$