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MathNet 2015-part-04 — 191 problems (EN–VI) Question 44

Math Olympiad Vault · MathNet 2015-part-04 — 191 problems (EN–VI)

Question 44

You may give each of the numbers 1 up to and including 2014 a color, where exactly half must become red and the other half blue. Then you look at the number $k$ of positive integers that can be written as the sum of a red and a blue number. Determine the maximum value of $k$ that you can achieve.