Problems from ICPC SG Preliminary Contest 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
2048	10716	4923	46%	0.00	4782	4077	85%	2.6
Animal Classification	1681	395	23%	0.03	335	224	67%	6.8
Grid MST	2126	473	22%	0.05	461	280	61%	7.3
ICPC Tutorial	6865	1779	26%	0.00	1703	1422	83%	3.2
Panda Chess	2108	462	22%	0.12	415	310	75%	6.0
Pivot	8993	3286	37%	0.00	2690	2231	83%	3.2
Rectangle Land	846	161	19%	0.46	164	109	66%	7.3
Ski	582	103	18%	0.35	133	67	50%	7.9
Triangles	606	97	16%	0.19	142	69	49%	8.2
VisuAlgo Online Quiz	2401	849	35%	0.00	644	562	87%	3.4