Difference between revisions of "2021 IMO Problems/Problem 6"
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https://./vUftJHRaNx8 [Video contains solutions to all day 2 problems]
Latest revision as of 00:57, 2 August 2021
Let be an integer, be a finite set of (not necessarily positive) integers, and be subsets of . Assume that for each the sum of the elements of is . Prove that contains at least elements.
https://youtu.be/vUftJHRaNx8 [Video contains solutions to all day 2 problems]