Add source files

Author: dkondor

README.md

@@ -1,2 +1,18 @@
 # bikeshare_online_model
 Code used for the online model in paper https://arxiv.org/abs/1909.03679
+
+This repository contains four version of the online model:
+
+ - bikeshare_network_weighted_ids.cpp: basic version, new vehicles are
+	added on the fly to make sure all trips are served
+ - bikeshare_network_weighted_ids2.cpp: alternate implementation,
+	distances from all trip ends to all trip starts need to be
+	precalculated up to a given radius to speed up processing
+ - bikeshare_network_weighted_ids_nomax.cpp: version with unlimited
+	waiting times, no new vehicles are added during the day, instead
+	they are distributed randomly in the beginning; needs precalculated
+	distances as well
+ - bikeshare_network_weighted_ids_tw.cpp: limited oracle model, upcoming
+	trips requests are assumed to be known in a T_{LA} time window in
+	advance, optimization is still performed in batches
+