freeCodeCamp/curriculum/challenges/portuguese/08-coding-interview-prep/project-euler/problem-433-steps-in-euclid...

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---
id: 5900f51d1000cf542c51002f
challengeType: 5
title: 'Problem 433: Steps in Euclid"s algorithm'
videoUrl: ''
localeTitle: 'Problema 433: Etapas no algoritmo de Euclides'
---
## Description
<section id="description"> Seja E (x0, y0) o número de passos necessários para determinar o maior divisor comum de x0 e y0 com o algoritmo de Euclides. Mais formalmente: x1 = y0, y1 = x0 mod y0xn = yn-1, yn = xn-1 mod yn-1 E (x0, y0) é o menor n tal que yn = 0. <p> Nós temos E (1,1) = 1, E (10,6) = 3 e E (6,10) = 4. </p><p> Defina S (N) como a soma de E (x, y) para 1 ≤ x, y ≤ N. Temos S (1) = 1, S (10) = 221 e S (100) = 39826. </p><p> Encontre S (5 · 106). </p></section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler433()</code> deve retornar 326624372659664.
testString: 'assert.strictEqual(euler433(), 326624372659664, "<code>euler433()</code> should return 326624372659664.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler433() {
// Good luck!
return true;
}
euler433();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>