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............logical, I didn't think of that.................oh well, I already sent it a second time anyway.................basically, it's midnight. Here's my best result. I must sadly note that I couldn't catch up with everyone on day 4, and on day 5, the total skill points are 16, and there are only 4 mercury points.
Added 3 minutes later
by the way, yesterday I had an idea of how to finish in 4 days, but I didn't even have a chance to check it - we were drinking today - a guy was going on vacation.