Oliver Eyton-Williams ee1e8abd87
feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

1.0 KiB
Raw Blame History

id, title, challengeType, videoUrl, dashedName
id title challengeType videoUrl dashedName
5900f50d1000cf542c51001f 问题417倒数周期II 5 problem-417-reciprocal-cycles-ii

--description--

单位分数在分子中包含1。给出分母2到10的单位分数的十进制表示

1/2 = 0.5 1/3 = 0.31/4 = 0.25 1/5 = 0.2 1/6 = 0.161/7 = 0.1428571/8 = 0.125 1/9 = 0.11/10 = 0.1

其中0.16表示0.166666 ...并具有1位循环周期。可以看出1/7具有6位循环周期。

分母没有其他素数因子而不是2和/或5的单位分数不被认为具有重复周期。我们将这些单位分数的重复周期的长度定义为0。

令Ln表示1 / n的循环周期的长度。给出ΣLn3≤n≤1000 000等于55535191115。

找ΣLn为3≤n≤100000 000

--hints--

euler417()应该返回446572970925740。

assert.strictEqual(euler417(), 446572970925740);

--seed--

--seed-contents--

function euler417() {

  return true;
}

euler417();

--solutions--

// solution required