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Line 132: ccoins=: {{ (#i), +/!x:+/"1 i=. x selcoins y }}</lang> <code>selcoins</code> identifies the valid selections of the coins. <code>ccoins</code> counts ~~then~~them, giving two counts (first is where coin order does not matter, second is where each permutation of physical coins is counted separately). Task examples:<lang J> 6 ccoins 1 2 3 4 5

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