MathDB
each of numbers 1-2014 colored red and blue, half each, max sum 2 balls

Source: Dutch IMO TST 2015 day 2 p4

August 30, 2019
maximum valuemaximumcombinatoricsSumColoring

Problem Statement

Each of the numbers 11 up to and including 20142014 has to be coloured; half of them have to be coloured red the other half blue. Then you consider the number kk of positive integers that are expressible as the sum of a red and a blue number. Determine the maximum value of kk that can be obtained.