KöMaL 2018 B4957
A set with positive integer elements is said to be jolly good if it does not contain a pair of numbers whose difference is 2. How many jolly good subsets does the set have?
Official text KöMaL. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
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