Problems by William Zhao

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Counting Staircases	0.04	265	260	73	28%	4.7Medium	en
Hatter's Hat Shop	0.15	1279	145	22	15%	7.7Hard	en
Metro Mapping	0.08	847	371	89	24%	6.9Hard	en
Mid Card	0.57	1490	252	67	27%	8.0Hard	en