[toothbrush]

Okay, that was an exercise in frustration. By the third timeout i was pretty confident i had the answers right, but nothing happened. :(

[arbitrage]

same. claimed i had errors, checked multiple times, did not work.

if this is a recruiting tool, they should make sure they code it properly. unless part of the game is to debug it ... but i do enough of that already at work, so screw it.