Kidney exchange instances

This archive contains a large number of kidney exchange instances.
Each folder contains 640 instances, each of which is a JSON file
as described at
  https://kep-solver.readthedocs.io/en/latest/source/formats.html#input

Each folder corresponds to a particular experimental setup as described
in the preprint paper available at
  http://www.optimization-online.org/DB_HTML/2021/06/8432.html