---
id: 5900f3c11000cf542c50fed4
challengeType: 5
title: 'Problem 85: Counting rectangles'
videoUrl: ''
localeTitle: 问题85：计算矩形
---

## Description
<section id="description">通过仔细计数可以看出，3×2的矩形网格包含十八个矩形： <p>虽然不存在包含正好两百万个矩形的矩形网格，但是找到最近解的网格区域。 </p></section>

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

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler85()</code>应该返回2772。
    testString: 'assert.strictEqual(euler85(), 2772, "<code>euler85()</code> should return 2772.");'

```

</section>

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

<div id='js-seed'>

```js
function euler85() {
  // Good luck!
  return true;
}

euler85();

```

</div>



</section>

## Solution
<section id='solution'>

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