olymmath

ISL 2014 N3

    A coin is called a Cape Town coin if its value is 1/n1 / n for some positive integer nn. Given a collection of Cape Town coins of total value at most 99+1299+\frac{1}{2}, prove that it is possible to split this collection into at most 100 groups each of total value at most 1. (Luxembourg)

    Dataset text NuminaMath olympiads. Quoted with source.

    Official text: IMO 2014 Shortlist booklet, page 10.

    Solutions

    Official solution Solution 1 by the IMO Problem Selection Committee

    The terms of the source let olymmath link to this solution but not copy it. Read the solution (IMO official site).

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