Problems from ICPC SG Preliminary Contest 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
2048	11632	5276	45%	0.00	5128	4357	85%	2.5
Animal Classification	1737	403	23%	0.03	346	230	66%	7.0
Grid MST	2215	493	22%	0.05	477	290	61%	7.4
ICPC Tutorial	7126	1826	26%	0.00	1752	1462	83%	3.1
Panda Chess	2175	480	22%	0.12	433	325	75%	6.0
Pivot	9695	3542	37%	0.00	2940	2442	83%	3.1
Rectangle Land	847	161	19%	0.46	165	109	66%	7.4
Ski	582	103	18%	0.35	133	67	50%	7.9
Triangles	626	98	16%	0.19	147	70	48%	8.2
VisuAlgo Online Quiz	2546	891	35%	0.00	681	591	87%	3.6