Problems from ICPC SG Preliminary Contest 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
2048	9714	4481	46%	0.00	4302	3693	86%	2.3
Animal Classification	1626	379	23%	0.03	324	217	67%	6.8
Grid MST	2054	449	22%	0.07	439	265	60%	7.3
ICPC Tutorial	6459	1659	26%	0.00	1597	1337	84%	2.9
Panda Chess	1944	425	22%	0.12	384	285	74%	5.9
Pivot	8215	2969	36%	0.00	2427	2009	83%	3.1
Rectangle Land	822	156	19%	0.46	161	106	66%	7.3
Ski	562	96	17%	0.35	130	65	50%	7.7
Triangles	595	96	16%	0.19	138	68	49%	8.0
VisuAlgo Online Quiz	2224	759	34%	0.00	612	531	87%	3.5