	\tikzstyle{input_neuron}=[circle,draw=red!50,fill=red!10,thick,minimum size=6mm]
	\tikzstyle{hidden_neuron}=[circle,draw=blue!50,fill=cyan!10,thick,minimum size=6mm]
	\tikzstyle{output_neuron}=[circle,draw=green!50,fill=green!10,thick,minimum size=6mm]
	\tikzstyle{cpy_neuron}=[circle,draw=red!50,fill=red!50,thick,minimum size=6mm]
	\tikzstyle{input}=[circle,draw=black!50,fill=black!20,thick,minimum size=6mm]
	
\begin{center}

\begin{tikzpicture}[every node/.style={hidden_neuron},scale=0.5]
    \foreach \i [count=\ii from 1] in {378,234,90,306,162}
\path (\i:32mm) node (p\ii) {$X_{\ii}$};

\draw[thick,blue,->] (p1) -- (p2);
\draw[thick,blue,->] (p1) -- (p4);
\draw[thick,blue,->] (p2) -- (p4);
\draw[thick,blue,->] (p3) -- (p1);
\draw[thick,blue,->] (p3) -- (p2);
\draw[thick,blue,->] (p3) -- (p4);
\draw[thick,blue,->] (p3) -- (p5);
\draw[thick,blue,->] (p5) -- (p1);
\draw[thick,blue,->] (p5) -- (p2);
\draw[thick,blue,->] (p5) -- (p4);




\end{tikzpicture}

\end{center}
