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freeCodeCamp/curriculum/challenges/english/08-coding-interview-prep/project-euler/problem-355-maximal-coprime-subset.english.md
Randell Dawson a7eb800450 fix(curriculum): Remove unnecessary assert message argument from English Coding Interview Prep challenges - Project Euler - 04 (#36418)
* fix: removed assert msg argument-4

* fix: remove double quotes surrounding testString code

Co-Authored-By: Tom <20648924+moT01@users.noreply.github.com>
2019-07-27 07:34:19 -05:00

906 B

id, challengeType, title
id challengeType title
5900f4d01000cf542c50ffe2 5 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).

Instructions

Tests

tests:
  - text: <code>euler355()</code> should return 1726545007.
    testString: assert.strictEqual(euler355(), 1726545007);

Challenge Seed

function euler355() {
  // Good luck!
  return true;
}

euler355();

Solution

// solution required