cat.ind

\begin{theindex}

\large\Titillium%
\texttt{P}\par\nopagebreak

 \item \small Permutations
    \subitem ISL 2008 C2 \dotfill \hyperpage{120}
    \subitem USAMO 2017 P5 \dotfill \hyperpage{120}

  \indexspace

\large\Titillium%
\texttt{S}\par\nopagebreak

 \item \small Sets
    \subitem Local
      \subsubitem Iran TST 2008 D3P1 \dotfill \hyperpage{11}
      \subsubitem ISL 2002 C5 \dotfill \hyperpage{12}
      \subsubitem Romanian TST 2016 D1P2 \dotfill \hyperpage{11}
    \subitem Max-set with property
      \subsubitem Iran TST 2013 D1P2 \dotfill \hyperpage{13}
      \subsubitem USA TST 2005 P1 \dotfill \hyperpage{11}
    \subitem Subsets of $[N]$
      \subsubitem American Mathematical Monthly E2309 \dotfill 
		\hyperpage{12}
      \subsubitem CGMO 2010 P1 \dotfill \hyperpage{12}
      \subsubitem ISL 1988 P10 \dotfill \hyperpage{12}

\end{theindex}