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HMMT 1999 V4

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You are given 16 pieces of paper numbered 16,15,…,2,116,15, \ldots, 2,1 in that order. You want to put them in the order 1,2,…,15,161,2, \ldots, 15,16 switching only two adjacent pieces of paper at a time. What is the minimum number of switches necessary?

Dataset text NuminaMath olympiads. Quoted with source.

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Locator hmmt/1999/v4 · Tag ZPM3384FFW · Edit this page on GitHub · Keys: j next, k previous