\begin{minipage}{0.32\textwidth}
	\centering
	
	\begin{tikzpicture}[scale=0.6]
		\draw[->,>=latex] (0,-0.5) -- (0,7.5);
		\draw[->,>=latex] (-0.5,0) -- (6.5,0);
		\draw[color=myblue, line width=2pt] (0,0) -- (1,0) -- (1,1) -- (1,2) -- (2,2) -- (2,3) -- (2,4) -- (3,4) -- (4,4) -- (4,6);
		\foreach \x in {0,...,6}
		\foreach \y in {0,...,7}
		{\draw[fill=black](\x,\y)circle(2pt);}
		\node[above left=-0.1, color=black] at (0,0) {\footnotesize $(0,0)$};
		\node[above right=-0.1, color=black] at (4,6) {\footnotesize $(k,n+m-k)$};
		\node[above left=-0.1, color=black] at (0,5) {\footnotesize $(0,n)$};
		\node[below right=-0.1, color=black] at (4,1) {\footnotesize $(k,n-k)$};
		\node[above right=-0.1, color=black] at (2,3) {\footnotesize \color{myblue} $(j,n-j)$};
		\draw[fill=black,color=black](0,0)circle(4pt);
		\draw[fill=black,color=black](4,6)circle(4pt);
		\draw[fill=black,color=black](0,5)circle(4pt);
		\draw[fill=black,color=black](4,1)circle(4pt);
		\draw (0,5) -- (4,1);
		\draw[fill=myblue,color=myblue](2,3)circle(4pt);
	\end{tikzpicture}

\end{minipage}
\hfill
\begin{minipage}{0.1\textwidth} \centering
	$\leftrightarrow$
\end{minipage}
\hfill
\begin{minipage}{0.55\textwidth}\centering
	\begin{tikzpicture}[scale=0.6]
%	\path[fill=green!10] (2,0) rectangle (4,3) node[pos=.5, color=black] {};
%	\path[fill=myblue!10] (0,0) rectangle (2,3) node[pos=.5, color=black] {};
%	\path[fill=myred!10] (2,3) rectangle (4,6) node[pos=.5, color=black] {};
%	\draw[->,>=latex] (0,-0.5) -- (0,7.5);
%	\draw[->,>=latex] (-0.5,0) -- (6.5,0);
%	\draw[color=myblue, line width=2pt] (0,0) -- (1,0) -- (1,1) -- (1,2) -- (2,2) -- (2,3);
%	\draw[color=myred, line width=2pt] (2,3) -- (2,4) -- (3,4) -- (4,4) -- (4,6);
%	\foreach \x in {0,...,6}
%	\foreach \y in {0,...,7}
%	{\draw[fill=black](\x,\y)circle(2pt);}
%	\draw[fill=black,color=black](0,0)circle(4pt);
%	\draw[fill=black,color=black](4,6)circle(4pt);
%	\draw[fill=myblue,color=black](2,3)circle(4pt);
	\path[fill=green!20] (2,0) rectangle (4,3) node[pos=.5, color=black] {};
	\path[pattern=horizontal lines, pattern color=green!30] (4,0) rectangle (4,3) node[pos=.5, color=black] {};
	\path[fill=myblue!10] (0,0) rectangle (2,3) node[pos=.5, color=black] {};
	\path[pattern=north west lines, pattern color=myblue!30] (0,0) rectangle (2,3) node[pos=.5, color=black] {};
	\path[fill=myred!10] (2,3) rectangle (4,6) node[pos=.5, color=black] {};
	\path[pattern=north east lines, pattern color=myred!30] (2,3) rectangle (4,6) node[pos=.5, color=black] {};
	\draw[color=myblue, line width=2pt] (0,0) -- (1,0) -- (1,1) -- (1,2) -- (2,2) -- (2,3);
	\draw[color=myred, line width=2pt] (2,3) -- (2,4) -- (3,4) -- (4,4) -- (4,6);
	\draw[fill=black,color=black](0,0)circle(3pt);
	\draw[fill=black,color=black](4,6)circle(3pt);
	\draw[fill=myblue,color=black](2,3)circle(3pt);
	%\draw[fill=myblue,color=black](3,4)circle(3pt);
	%\draw[fill=myblue,color=black](3,3)circle(3pt);
	\node[right, color=black] at (4,1.5) {\footnotesize ${\displaystyle \prod_{i=1}^{k-j}W(i+j,n-j)}$};
	\node[right, color=black] at (4,4.5) {\footnotesize $x^j y^{n-j} \wBinom{m}{k-j}{w} y^{j-n} x^{-j}$};
	\node[left, color=black] at (0,1.5) {\footnotesize $\wBinom{n}{j}{w}$};
	\end{tikzpicture}
\end{minipage}