\begin{tabu}{c}

\begin{tabu}to 0.5\linewidth{|X[1,c]|X[1,c]|X[1,c]|X[1,c]|}

\hline

\backslashbox{$x$\kern-2em}{$y$} & $0$ & $1$ & $2$ \\ \hline

$0$ & $0$ & $-2$ & $-4$ \\ \hline

$1$ & $1$ & $-1$ & $-3$ \\ \hline

$2$ & $2$ & $0$ & $-2$ \\ \hline

\end{tabu}\\

\bigskip

[표 $1$] \\

\begin{tabu}to 0.5\linewidth{|X[1,c]|X[1,c]|X[1,c]|X[1,c]|}

\hline

\backslashbox{$x$\kern-2em}{$y$} & $0$ & $1$ & $2$ \\ \hline

$0$ & $0$ & $-1$ & $-2$ \\ \hline

$1$ & $1$ & $0$ & $-1$ \\ \hline

$2$ & $2$ & $1$ & $0$ \\ \hline

\end{tabu} \\

\bigskip

[표 $2$] \\

\end{tabu}

 

이렇게 했는데 첫줄의 표 높이가 너무 높은데 어찌 조절할수 있을까요