Repository containing my solutions. They are written in C++, although it is in many ways closer to C than C++ (i.e. you will not find a std:: anywhere).
Run ./build.sh <n> to compile, where <n> is the day; e.g. ./build.sh 1 compiles the first day. The executable is aoc, run it without any arguments (it reads from input/<day>, e.g. input/1). This code is Linux specific. Perhaps it compiles under other unixes as well.
The commit messages contain commentary on the solutions.