Problems from ICPC SG Preliminary Contest 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
2048	10255	4700	46%	0.00	4531	3880	86%	2.5
Animal Classification	1662	388	23%	0.03	328	221	67%	6.7
Grid MST	2105	462	22%	0.05	452	271	60%	7.4
ICPC Tutorial	6658	1726	26%	0.00	1643	1377	84%	2.9
Panda Chess	1975	431	22%	0.12	392	291	74%	6.0
Pivot	8684	3163	36%	0.00	2582	2141	83%	3.1
Rectangle Land	846	161	19%	0.46	164	109	66%	7.3
Ski	582	103	18%	0.35	133	67	50%	7.8
Triangles	600	97	16%	0.19	140	69	49%	8.1
VisuAlgo Online Quiz	2273	771	34%	0.00	622	538	86%	3.5