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gikf eef1805fe6 fix(curriculum): clean-up Project Euler 201-220 (#42826)
* fix: clean-up Project Euler 201-220

* fix: corrections from review

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
2021-07-15 09:20:31 +02:00

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Markdown

---
id: 5900f43f1000cf542c50ff51
title: 'Problem 208: Robot Walks'
challengeType: 5
forumTopicId: 301849
dashedName: problem-208-robot-walks
---
# --description--
A robot moves in a series of one-fifth circular arcs (72°), with a free choice of a clockwise or an anticlockwise arc for each step, but no turning on the spot.
One of 70932 possible closed paths of 25 arcs starting northward is
<img class="img-responsive center-block" alt="closed path of 25 arcs, starting northward" src="https://cdn.freecodecamp.org/curriculum/project-euler/robot-walks.gif" style="background-color: white; padding: 10px;">
Given that the robot starts facing North, how many journeys of 70 arcs in length can it take that return it, after the final arc, to its starting position?
**Note:** Any arc may be traversed multiple times.
# --hints--
`robotWalks()` should return `331951449665644800`.
```js
assert.strictEqual(robotWalks(), 331951449665644800);
```
# --seed--
## --seed-contents--
```js
function robotWalks() {
return true;
}
robotWalks();
```
# --solutions--
```js
// solution required
```