Crash and Compile

Show your programming skills during this competition! The theme of this programming contest is 'Duif'[1] and this edition is modeled after Crash and Compile [2].
You play in pairs or on your own, trying to solve computation and programming puzzles as fast as possible to score points. There is a slight twist however:
- If your code fails to compile, you drink.
- If your code compiles, but fails to run, you take a drink.
- If your code runs, but fails to produce the correct output, you take a drink.
In order to win, you have to ride the Ballmer Peak [3], have fun, and adapt your debugging style to your ability to think and drink. Prizes will be awarded to the teams with the most points,
the most achievements collected and the best overall team. Given the fact that this competition will be held in the North Student Canteen, please bring your own laptop along!

PS You can participate in this event if you drink soda, beer, wine, water or nothing :).

[1] https://en.wikipedia.org/wiki/Duif
[2] http://crashandcompile.com/
[3] https://xkcd.com/323/