TravelingSalesmanProblem
sucks, in my implementation, using formula is same as bruteforce, hahaha
formula based on this video: https://www.youtube.com/watch?v=Q4zHb-Swzro
usage
go run main.go -module bruteforce|formula-v1|formula-v2
./tsp -module bruteforce|formula-v1|formula-v2