freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-233-lattice-points-on-a-circle.md

---
id: 5900f4551000cf542c50ff68
challengeType: 5
videoUrl: ''
title: 问题233：圆上的格点
---

## Description
<section id="description">令f（N）是在通过（0,0），（N，0），（0，N）和（N，N）的圆上具有整数坐标的点的数量。可以证明f（10000）= 36。 <p>所有正整数N≤1011的总和是多少，f（N）= 420？ </p></section>

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

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler233()</code>应该返回271204031455541300。
    testString: assert.strictEqual(euler233(), 271204031455541300);

```

</section>

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

<div id='js-seed'>

```js
function euler233() {
  // Good luck!
  return true;
}

euler233();

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```

/section>