\pdcontentsline{0}{2}{Problem}
\pdcontentsline{0}{3}{Contents}
\pdcontentsline{0}{4}{Slide 1}
\pdcontentsline{0}{5}{Use it or Lose it}
\pdcontentsline{1}{6}{First section}
\pdcontentsline{0}{7}{Slide 2}
\pdcontentsline{0}{8}{Slide 3}