freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-388-distinct-lines.md

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---
id: 5900f4f11000cf542c510002
challengeType: 5
videoUrl: ''
2020-10-01 15:54:21 +00:00
title: 问题388不同的线条
---
## Description
<section id="description">考虑所有格点abc其中0≤abc≤N。 <p>从原点O0,0,0开始所有线都被绘制到其他格点。设DN是不同的这种线的数量。 </p><p>您被给予D1 000 000= 831909254469114121。 </p><p>找到D1010。将前9位数字后跟最后9位数字作为答案。 </p></section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler388()</code>应该返回831907372805130000。
testString: assert.strictEqual(euler388(), 831907372805130000);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler388() {
// Good luck!
return true;
}
euler388();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
/section>