My North America Finals (Chicago) Contest Solutions

In 2012, the coaches of the North American Finals teams decided that they wanted to get together to improve their teams' performances in World Finals. To that end, a contest was created, hosted by the University of Chicago. The teams invited to the contest were only the teams that qualified for World Finals. Though not sponsored as an official ACM-ICPC contest, this contest is effectively the equivalent of a North American Finals contest. Data for the contest is posted publicly and the solutions I have posted produce the correct results. (Though for years 2012-2015, I don't know the time limits used in contest, so it's possible some of my solutions are too slow. I have not included anything that I know is asympototically too slow. My 2016 solutions passed on kattis.)