Problems from ICPC SG Preliminary Contest 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
2048	4544	2208	49%	0.00	2096	1790	85%	2.4
Animal Classification	1158	235	20%	0.03	218	135	62%	7.1
Grid MST	1564	298	19%	0.07	316	181	57%	7.2
ICPC Tutorial	3759	963	26%	0.00	975	788	81%	3.4
Panda Chess	1429	301	21%	0.12	282	208	74%	6.2
Pivot	4391	1610	37%	0.00	1254	1015	81%	3.1
Rectangle Land	689	121	18%	0.46	115	77	67%	7.4
Ski	478	78	16%	0.37	100	51	51%	8.3
Triangles	525	79	15%	0.19	112	58	52%	8.2
VisuAlgo Online Quiz	1653	535	32%	0.00	431	371	86%	3.7