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>
45 lines
816 B
Markdown
45 lines
816 B
Markdown
---
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id: 5900f5111000cf542c510023
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title: 问题420：2x2正整数矩阵
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challengeType: 5
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videoUrl: ''
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dashedName: problem-420-2x2-positive-integer-matrix
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---
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# --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。 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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# --hints--
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`euler420()`应该返回145159332。
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```js
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assert.strictEqual(euler420(), 145159332);
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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 euler420() {
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return true;
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}
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euler420();
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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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