freeCodeCamp/curriculum/challenges/chinese/08-coding-interview-prep/project-euler/problem-430-range-flips.chi...

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---
id: 5900f51a1000cf542c51002d
challengeType: 5
title: 'Problem 430: Range flips'
videoUrl: ''
localeTitle: ''
---
## Description
undefined
## Instructions
undefined
## Tests
<section id='tests'>
```yml
tests:
- text: ''
testString: 'assert.strictEqual(euler430(), 5000624921.38, "<code>euler430()</code> should return 5000624921.38.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler430() {
// Good luck!
return true;
}
euler430();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>