---
id: 5900f4e11000cf542c50fff3
challengeType: 5
title: 'Problem 372: Pencils of rays'
videoUrl: ''
localeTitle: 问题372：光线笔
---

## Description
<section id="description">令R（M，N）为满足M的格点（x，y）的数量<p>注意：代表楼层功能。 </p></section>

## Instructions
<section id="instructions">
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler372()</code>应该返回301450082318807040。
    testString: 'assert.strictEqual(euler372(), 301450082318807040, "<code>euler372()</code> should return 301450082318807040.");'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function euler372() {
  // Good luck!
  return true;
}

euler372();

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>