My first time at aoc - cpp and python
The solutions are standalone cpp programs so no worries about compiling.
They are tested with
g++ -std=c++14 -Wshadow -Wall -o "%e" "%f" -O2 -Wno-unused-result // fast
g++ -std=c++14 -Wshadow -Wall -o "%e" "%f" -g -fsanitize=address -fsanitize=undefined -D_GLIBCXX_DEBUG // slow but safe