62 lines
1.1 KiB
Markdown
62 lines
1.1 KiB
Markdown
---
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id: 5900f4041000cf542c50ff17
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challengeType: 5
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videoUrl: ''
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title: 问题152：将一半写为倒数平方和
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---
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## Description
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<section id="description">
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有几种方法可以使用不同的整数将数字1/2写成反平方和。
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例如，可以使用数字{2,3,4,5,7,12,15,20,28,35}：
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实际上，仅使用2到45之间的整数（包括2和45），完全可以通过三种方式来实现，其余两种方式是：{2,3,4,6,7,9,10,20,28,35,36,45 }和{2,3,4,6,7,9,12,15,28,30,35,36,45}。
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使用2到80之间（含2和80）的不同整数，有多少种方法可以将数字1/2写成反平方和？
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</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>euler152()</ code>应该返回301。'
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testString: assert.strictEqual(euler152(), 301);
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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 euler152() {
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// Good luck!
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return true;
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}
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euler152();
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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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