#98 #99 bring back the removed subproblems, add clarifications

chapter3/problems/5/f.tex

@@ -0,0 +1,6 @@
+\starred
+\clarification{The statement in this part is flawed and cannot be solved.
+First, it lacks the assumption that both sums converge to positive numbers.
+Second, it fails to clarify the variable that the right-hand side $\Theta$-notation applies to, making the equation either trivial or unambiguous.
+Removed in fourth printing.}
+\bignegskip

chapter3/problems/5/g.tex

@@ -0,0 +1,3 @@
+\starred
+\clarification{Similar as above.}
+\bignegskip

clrs4e-solutions.tex

@@ -173,6 +173,8 @@
     \vspace*{20pt}\marginpar{\bcpanchant}\vspace{-20pt}%
     \emph{Work in progress.}}
 
+\newcommand{\bignegskip}{\vspace{-\bigskipamount}}
+
 \renewcommand{\cfttoctitlefont}{\normalfont\color{darkblue}\Large}
 \renewcommand{\cftbeforetoctitleskip}{0pt}
 \renewcommand{\cftaftertoctitleskip}{1.5in}