freeCodeCamp/curriculum/challenges/chinese/08-coding-interview-prep/project-euler/problem-31-coin-sums.chinese.md

---
id: 5900f38b1000cf542c50fe9e
challengeType: 5
title: 'Problem 31: Coin sums'
videoUrl: ''
localeTitle: ''
---

## Description
undefined

## Instructions
undefined

## Tests
<section id='tests'>

```yml
tests:
  - text: ''
    testString: 'assert(coinSums(50) == 451, "<code>coinSums(50)</code> should return 451.");'
  - text: ''
    testString: 'assert(coinSums(100) == 4563, "<code>coinSums(100)</code> should return 4563.");'
  - text: ''
    testString: 'assert(coinSums(150) == 21873, "<code>coinSums(150)</code> should return 21873.");'
  - text: ''
    testString: 'assert(coinSums(200) == 73682, "<code>coinSums(200)</code> should return 73682.");'

```

</section>

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

<div id='js-seed'>

```js
function coinSums(n) {
  // Good luck!
  return n;
}

coinSums(200);

```

</div>



</section>

## Solution
<section id='solution'>

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