Problems from ICPC SG Preliminary Contest 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
2048	5989	2842	47%	0.00	2724	2324	85%	2.5
Animal Classification	1372	295	22%	0.03	276	178	64%	6.6
Grid MST	1731	354	20%	0.07	364	216	59%	6.9
ICPC Tutorial	4841	1219	25%	0.00	1220	1004	82%	2.9
Panda Chess	1732	367	21%	0.12	348	254	73%	6.1
Pivot	5728	2086	36%	0.00	1643	1343	82%	2.9
Rectangle Land	769	139	18%	0.46	142	91	64%	7.4
Ski	546	91	17%	0.37	120	61	51%	7.3
Triangles	559	87	16%	0.19	131	63	48%	8.5
VisuAlgo Online Quiz	1954	632	32%	0.00	515	441	86%	3.7