Problems by William Zhao – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Counting Staircases	0.04	265	103	80	78%	4.6Medium	en
Hatter's Hat Shop	0.15	1279	36	20	56%	7.7Hard	en
Metro Mapping	0.08	847	102	80	78%	6.7Hard	en
Mid Card	0.42	1490	68	53	78%	7.2Hard	en
OK Maps	0.00	148	67	45	67%	6.5Hard	en