3 Count the length of head movement 2019-12-09T11:20:22.517

2 Coloring the switchboard red 2015-10-27T12:44:09.343

2 All-pairs shortest return paths without reusing edges 2016-12-05T15:37:40.297

2 Dynamic programming - decreasing number 2017-02-09T15:03:38.373

1 The Truck Problem 2015-09-19T23:02:18.370

0 Find the fastest swim relay (shortest path of unique nodes and types) 2014-06-23T08:14:40.430