todo:

https://dmoj.ca/problem/dimsum3 (bf) (implement decimal system and reuse scuffed code?)

https://dmoj.ca/problem/ccc05s5

https://dmoj.ca/problem/dmopc21c10p5 backtracking algorithm but im not a dirty cheeser

https://dmoj.ca/problem/factorial2 (modular arithmetic?)

https://dmoj.ca/problem/aplusb2

https://dmoj.ca/problem/ccc20s3 i do not know string algorithms

https://dmoj.ca/problem/dmopc19c6p3 probably not that bad just math

https://dmoj.ca/problem/coci16c6p4 nerfed but its math so its still pretty cool

https://dmoj.ca/problem/cco12p2 https://stackoverflow.com/questions/4971850/which-algorithm-can-i-use-to-find-the-next-to-shortest-path-in-a-graph

https://dmoj.ca/problem/atimesb https://en.wikipedia.org/wiki/Karatsuba_algorithm

https://dmoj.ca/problem/dwite11c3p5 silly little boolean algebra

https://dmoj.ca/problem/fibonacci2

https://dmoj.ca/problem/dmpg15s6 infinite cycle sssp?

https://dmoj.ca/problem/ccc23s5 graph theory where?

review directed acyclic graph