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freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-454-diophantine-reciprocals-iii.english.md
mrugesh 22afc2a0ca feat(learn): python certification projects (#38216)
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Beau Carnes <beaucarnes@gmail.com>
2020-05-27 13:19:08 +05:30

942 B

id, challengeType, isHidden, title, forumTopicId
id challengeType isHidden title forumTopicId
5900f5331000cf542c510045 5 false Problem 454: Diophantine reciprocals III 302127

Description

In the following equation x, y, and n are positive integers. 1/x + 1/y= 1/n

For a limit L we define F(L) as the number of solutions which satisfy x < y ≤ L.

We can verify that F(15) = 4 and F(1000) = 1069. Find F(1012).

Instructions

Tests

tests:
  - text: <code>euler454()</code> should return 5435004633092.
    testString: assert.strictEqual(euler454(), 5435004633092);

Challenge Seed

function euler454() {
  // Good luck!
  return true;
}

euler454();

Solution

// solution required