ee1e8abd87
* 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>
41 lines
739 B
Markdown
41 lines
739 B
Markdown
---
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id: 5900f4411000cf542c50ff54
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title: 问题213：跳蚤马戏团
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challengeType: 5
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videoUrl: ''
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dashedName: problem-213-flea-circus
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---
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# --description--
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一个30×30的正方形网格包含900个跳蚤，最初是每平方一个跳蚤。当响铃响起时，每个跳蚤随机跳到相邻的广场（通常有4种可能，除了网格边缘或角落处的跳蚤）。
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在响铃50次后，预计的未占用方格数量是多少？将您的答案四舍五入到小数点后六位。
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# --hints--
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`euler213()`应返回330.721154。
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```js
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assert.strictEqual(euler213(), 330.721154);
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```
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# --seed--
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## --seed-contents--
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```js
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function euler213() {
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return true;
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}
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euler213();
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```
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# --solutions--
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```js
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// solution required
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```
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