olymmath

PAMO 2010 Problem 2

  • Day 1

How many ways are there to line up 1919 girls (all of different heights) in a row so that no girl has a shorter girl both in front of and behind her?

Dataset text AI-MO AoPS. Quoted with source.

Official text: Pan-African Mathematics Olympiad 2010 official paper, page 1.

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