deletions | additions       diff --git a/a) As few classrooms as possible.tex b/a) As few classrooms as possible.tex  index e473ffe..875174e 100644  --- a/a) As few classrooms as possible.tex  +++ b/a) As few classrooms as possible.tex 
...
\begin{subequations}  \begin{align*}  T(n) = c_0 + n\log{n} + \sum_{i=1}^{n-1} \left[ \log{i} + \sum_{j=1}^i \left[ \Big[  c_1 \right] \Big]  \right] + \sum_{i=1}^{n-1} \left[ \log{i} \right] + \log{1}  \end{align*}  \end{subequations}