2018-10-10 22:03:03 +00:00
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---
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id: 5900f5111000cf542c510023
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challengeType: 5
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videoUrl: ''
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2020-10-01 15:54:21 +00:00
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title: 问题420:2x2正整数矩阵
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2018-10-10 22:03:03 +00:00
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---
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## Description
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2020-02-17 16:40:55 +00:00
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<section id="description">
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正整数矩阵是其元素均为正整数的矩阵。
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一些正整数矩阵可以两种不同方式表示为正整数矩阵的平方。 这是一个例子:
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我们将F(N)定义为迹线小于N的2x2正整数矩阵的数目,并且可以用两种不同的方式将其表示为正整数矩阵的平方。
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我们可以验证F(50)= 7和F(1000)= 1019。
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找出F(107)。
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</section>
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2018-10-10 22:03:03 +00:00
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## Instructions
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2020-02-17 16:40:55 +00:00
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<section id="instructions">
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</section>
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2018-10-10 22:03:03 +00:00
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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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2020-02-17 16:40:55 +00:00
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- text: <code>euler420()</code>应该返回145159332。
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testString: assert.strictEqual(euler420(), 145159332);
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2018-10-10 22:03:03 +00:00
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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 euler420() {
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// Good luck!
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return true;
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}
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euler420();
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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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2020-08-13 15:24:35 +00:00
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/section>
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