Problems by William Zhao

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Counting Staircases	0.04	265	240	64	27%	4.9Medium	en
Hatter's Hat Shop	0.15	1279	98	16	16%	7.8Hard	en
Metro Mapping	0.08	1108	338	86	25%	7.1Hard	en
Mid Card	0.57	1490	218	57	26%	8.2Hard	en