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Feat: add new Markdown parser (#39800)

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and change all the challenges to new `md` format.
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Oliver Eyton-Williams
2020-11-27 19:02:05 +01:00
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commit 0bd52f8bd1
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curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-459-flipping-game.md
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@ -1,56 +1,39 @@
---
id: 5900f5371000cf542c51004a
challengeType: 5
title: 'Problem 459: Flipping game'
challengeType: 5
forumTopicId: 302133
---
## Description
<section id='description'>
# --description--
The flipping game is a two player game played on a N by N square board.
Each square contains a disk with one side white and one side black.
The game starts with all disks showing their white side.
A turn consists of flipping all disks in a rectangle with the following properties:
the upper right corner of the rectangle contains a white disk
the rectangle width is a perfect square (1, 4, 9, 16, ...)
the rectangle height is a triangular number (1, 3, 6, 10, ...)
A turn consists of flipping all disks in a rectangle with the following properties: the upper right corner of the rectangle contains a white disk the rectangle width is a perfect square (1, 4, 9, 16, ...) the rectangle height is a triangular number (1, 3, 6, 10, ...)
Players alternate turns. A player wins by turning the grid all black.
Let W(N) be the number of winning moves for the first player on a N by N board with all disks white, assuming perfect play.
W(1) = 1, W(2) = 0, W(5) = 8 and W(102) = 31395.
Let W(N) be the number of winning moves for the first player on a N by N board with all disks white, assuming perfect play. W(1) = 1, W(2) = 0, W(5) = 8 and W(102) = 31395.
For N=5, the first player's eight winning first moves are:
Find W(106).
</section>
## Instructions
<section id='instructions'>
# --hints--
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler459()</code> should return 3996390106631.
testString: assert.strictEqual(euler459(), 3996390106631);
`euler459()` should return 3996390106631.
```js
assert.strictEqual(euler459(), 3996390106631);
```
</section>
# --seed--
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
## --seed-contents--
```js
function euler459() {
@ -61,17 +44,8 @@ function euler459() {
euler459();
```
</div>
</section>
## Solution
<section id='solution'>
# --solutions--
```js
// solution required
```
</section>