library - Some useful algorithms for competitive programming

Age	Commit message (Expand)	Author
2020-08-12	Cleaned up geometry libraries	Anthony Wang
2020-06-24	Update points_lines_vectors.cpp	Ta180m
2020-06-04	Update polygons.cpp	Anthony Wang
2020-05-19	Update points_lines_vectors.cpp	Ta180m
2020-05-19	Update points_lines_vectors.cpp	Ta180m
2019-09-04	Update polygons.cpp	Ta180m
2019-09-03	updating libraries	Ta180m
2019-07-17	Create points_lines_vectors.cpp	Ta180m