Update exam/packet.tex

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2025-11-22 22:01:30 -06:00
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@@ -142,8 +142,8 @@ Output:
\end{verbatim}
% ========================= Problem 4 =========================
\problem{Problem 3: Merge Intervals}
\textit{Difficulty: Hard}
\problem{Problem 4: Six Seven}
\textit{Difficulty: Easy}
\begin{itemize}
You are given a string S composed of only the characters 6', 7, A', B', and \#' (without the quotation marks). This string is processed from left to right, and you must maintain a sequence of chracters that changes according to these rules: