deletions | additions       diff --git a/dynamic.tex b/dynamic.tex  index 00d9ae6..06aeafd 100644  --- a/dynamic.tex  +++ b/dynamic.tex 
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...  mr(i-2, x-1, 0)  mr(i-1, x, 0)  ...  mr(i-1, x-1, 1)  ...  mr(i-2, x-1, 0)  ...  \end{verbatim}  Looking at this tree, we can see that \verb|mr(i-2, x-1, 0)| is computed twice. The same will be true for many other values in the execution tree. Thus, it is likely that dynamic programming will be of use here.