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IMO 2014 — Complete Shortlist Question 25

IMO Shortlist · IMO 2014 — Complete Shortlist

Question 25

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