56 lines
1.3 KiB
Markdown
56 lines
1.3 KiB
Markdown
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---
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id: 5900f41a1000cf542c50ff2c
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challengeType: 5
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title: 'Problem 173: Using up to one million tiles how many different "hollow" square laminae can be formed?'
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videoUrl: ''
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localeTitle: 问题173：使用多达一百万个瓷砖可以形成多少个不同的“空心”方形薄片？
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---
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## Description
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<section id="description">我们将方形薄片定义为具有方形“孔”的方形轮廓，使得该形状具有垂直和水平对称性。例如，使用正好三十二平方的瓷砖，我们可以形成两个不同的方形薄片： <p>使用一百个瓷砖，并且不一定一次使用所有瓷砖，可以形成四十一个不同的方形薄片。使用多达一百万个瓷砖可以形成多少个不同的方形薄片？ </p></section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>euler173()</code>应该返回1572729。
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testString: 'assert.strictEqual(euler173(), 1572729, "<code>euler173()</code> should return 1572729.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler173() {
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// Good luck!
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return true;
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}
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euler173();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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