Problems by William Zhao

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Counting Staircases	0.04	265	101	78	77%	4.6Medium	en
Hatter's Hat Shop	0.15	1279	35	19	54%	7.6Hard	en
Metro Mapping	0.08	847	100	78	78%	6.9Hard	en
Mid Card	0.42	1490	67	51	76%	7.8Hard	en
OK Maps	0.00	148	67	46	69%	6.2Hard	en