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id	title	challengeType	forumTopicId	dashedName
5900f4d01000cf542c50ffe2	Problem 355: Maximal coprime subset	5	302015	problem-355-maximal-coprime-subset

--description--

Define Co(n) to be the maximal possible sum of a set of mutually co-prime elements from {1, 2, ..., n}. For example Co(10) is 30 and hits that maximum on the subset {1, 5, 7, 8, 9}.

You are given that Co(30) = 193 and Co(100) = 1356.

Find Co(200000).

--hints--

euler355() should return 1726545007.

assert.strictEqual(euler355(), 1726545007);

--seed--

--seed-contents--

function euler355() {

  return true;
}

euler355();

--solutions--

// solution required

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