When I started, I was thinking about using JS both "for the lulz" and because I'm comfortable enough with it that it wouldn't be a hindrance, like LOLCODE or Be

When I started, I was thinking about using JS both "for the lulz" and because I'm comfortable enough with it that it wouldn't be a hindrance, like LOLCODE or Befunge. I went with python instead because I assumed I'd need to squeeze as much efficiency as possible out of my programs. For this round, these fears were completely unwarranted. All of the problems, except the second, were trivially O(n). (#2 wasn't worth optimizing, but it was possible) Does anyone have experience with the next round? Is speed still not really an issue?