Problems by Richard Peng

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Colliding Traffic	753	109	14%	0.01	97	71	73%	6.5
Ocean Currents	876	313	36%	0.17	242	210	87%	4.7
Scrolling Sign	956	453	47%	0.00	463	408	88%	2.9
Unique Snowflakes	3583	1015	28%	0.02	794	650	82%	4.2
Zerg Rush!!!	107	13	12%	0.28	18	11	61%	7.6