UPD：

• 2020-03-19 JetBrains已经把链接的各个入口取消了，这篇文章的步骤已经无法复现了，只能留作纪念。

• 2020-04-01 JetBrains通过邮件发送了官方题解

JetBrains Quest begins…

#JetBrainsQuest 48 61 76 65 20 79 6f 75 20 73 65 65 6e 20 74 68 65 20 73 6f 75 72 63 65 20 63 6f 64 65 20 6f 66 20 74 68 65 20 4a 65 74 42 72 61 69 6e 73 20 77 65 62 73 69 74 65 3f

8:04 PM · Mar 9, 2020·Twitter Web App

Part1

ASCII

48 61 76 65 20 79 6f 75 20 73 65 65 6e 20 74 68 65 20 73 6f 75 72 63 65 20 63 6f 64 65 20 6f 66 20 74 68 65 20 4a 65 74 42 72 61 69 6e 73 20 77 65 62 73 69 74 65 3f

WebSite Code

let me google that for you

• 欢迎你找到了谜题的入口
• 在 2020-03-15 12:00 CET 时间前完成一系列谜题，可以获得奖品
• 重点： 问题，JetBrains有很多产品，在产品列表中有一个像玩笑一样的东西，找出来，从这开始下一步
• 提示： 使用Chrome 无痕浏览模式(JetBrains: 谷歌结算下广告费 Google: 我帮你钦定了Kotlin来着)
• 独自上路过于危险，带上这个吧Good luck! == Jrrg#oxfn$ • 所以最后画的两把🗡 是在玩村好剑的梗？ 如此，我们进入到下一个谜题 Joke Product 上一个谜题得知的信息，希望我们找到某个专门为谜题准备的恶搞产品。 从官网的导航栏开始，在 Tools 下拉栏里点击 Find your tool 进入产品页 你的画风与众不同，就是你了 点开查看详细信息 这个谜题需要我们计算出 500 到 5000 内有多少个质数，计算结果是一个三位数，把它填入到 https://jb.gg/### 以替换###进入下一步 写个脚本算一下 接下来访问https://jb.gg/574 发现跳转到如下页面 这题我会，YT是YouTrack的意思，用来提issue的，我去年提的issue现在都还没在正式版修复呢 进入到对应issue的链接： https://youtrack.jetbrains.com/issue/MPS-31816 Decrypt 之前说的村好剑现在还真的派上用场了 • Good luck! == Jrrg#oxfn$
• Qlfh\$#Li#|rx#d...后面太长省略

Part 2

UPD: 2020-03-11 22:00

The product domain-specific languages are specified, is where the next of quest hides. The case where Dutch tax is processed, is a place you should show interest. Look hard as when text is white, sometimes it is out of sight. Cmd/Ctrl+A helps

https://www.jetbrains.com/mps/

Look hard as when text is white, sometimes it is out of sight. Cmd/Ctrl+A helps.

Game

↑↑↓↓←→←→BA

Prize 2

You have passed the second quest and have proven yourself a worthy contender for our devious puzzles. We have one last quest in this series for you. It will be the ultimate quest, and it will secure your place in the halls of JetBrains Quest legend.
A little @jetbrains bird will deliver the next clue – so do some birdwatching,

Hidden Level

UPD: 2020-03-13

Cheating

UPD: 2020-03-13 22:00

JetBrains还真是怠惰，同样的方式把密码破解出来了

Part 3

Base64

UPD: 2020-03-14 14:00

兀

playground上看起来又是一个需要解码的

Questions

• What is the name of the newest JetBrains product? 答 Space
• What year was JetBrains founded? 答 2000
• Where is JetBrains headquarters? 答 捷克共和国
• How many developers use our products? 答 8 million
• What year was Kotlin introduced for the first time? 答 2011
• How many people founded JetBrains? 答 3
• How many employees does JetBrains have? 答 1256
• How much external funding have JetBrains received? 答 0
• From the Forbes Top 100 digital companies, how many use our products? 答 95

600多MB还挺大的，下完了还得删掉

an为斐波那契数列的第n项，可知通项公式为
$$a_n = \frac{(\frac{1+\sqrt5}{2})^n-(\frac{1-\sqrt5}{2})^n}{\sqrt5}$$

$$b_n = \frac{(\frac{1+\sqrt5}{2})^n}{\sqrt5}$$

$$| \frac{(\frac{1+\sqrt5}{2})^n}{(\frac{1-\sqrt5}{2})^n} | = (\frac{\sqrt5+1}{\sqrt5-1})^n ≈ 2^n$$

$$50000000 * log_{10}{2} ≈ 15000000$$

$$c_n = log_{10}{b_n} = nlog_{10}{\frac{1+\sqrt5}{2}} - \frac{log_{10}{5}}{2}$$

$$10 ^ {c_n - \lfloor c_n \rfloor}$$

All Prizes

Code:

• BecauseCode（TheDriveToDevelop 已废弃）
• PlayGames (GamesAreFun已废弃)
• 46023125