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Help Feluda with mathematical equations statistics & best solutions

Users accepted	Submissions	Accepted	Wrong Answer	Compile Error	Runtime Error	Time Limit Exceeded
272	1750	399	546	65	269	470

RANK	DATE	USER	RESULT	TIME	MEM	LANG
61	2013-08-20 23:49:16	shivam agarwal	accepted	0.23	2.6M	C++ 4.3.2
62	2013-08-22 20:37:54	Abhishek Modi	accepted	0.23	4.0M	C++ 4.3.2
63	2013-08-28 07:23:46	Nipun Poddar	accepted	0.23	15M	C++ 4.3.2
64	2013-08-28 15:17:03	abdou_93	accepted	0.23	11M	C++ 4.3.2
65	2013-08-31 17:41:38	Anshuman Singh	accepted	0.23	3.1M	C++ 4.3.2
66	2013-11-25 08:44:55	Dinesh	accepted	0.23	4.0M	C++ 4.3.2
67	2013-12-05 13:35:36	Rahul Gurjar	accepted	0.23	12M	C++ 4.3.2
68	2013-12-20 20:21:47	Deepak gupta	accepted	0.23	4.4M	C++ 4.3.2
69	2014-01-10 16:47:26	Satrio Verdianto	accepted	0.23	3.7M	C++ 4.3.2
70	2014-07-22 20:46:28	Pratik kumar	accepted	0.23	2.8M	C++ 4.3.2
71	2014-12-20 10:41:18	vivek	accepted	0.23	2.8M	C++ 4.3.2
72	2015-01-04 21:32:51	Akash Sharma	accepted	0.23	3.7M	C++ 4.3.2
73	2015-01-20 14:38:08	Kid Algorist	accepted	0.23	6.9M	C++ 4.3.2
74	2013-08-19 20:17:04	Kuldeep Fouzdar	accepted	0.24	2.8M	C++ 4.3.2
75	2013-08-23 07:19:25	Rana Saha	accepted	0.24	7.5M	C++ 4.3.2
76	2013-09-02 19:13:39	Abhay Mangal	accepted	0.24	3.7M	C++ 4.3.2
77	2013-09-23 18:06:54	Andy	accepted	0.24	3.7M	C++ 4.3.2
78	2013-11-13 17:46:20	Melfa Andrian	accepted	0.24	3.7M	C++ 4.3.2
79	2013-11-30 09:45:31	Tushar Makkar	accepted	0.24	2.6M	C++ 4.3.2
80	2014-02-03 11:04:15	Ankit Chaudhary	accepted	0.24	3.7M	C++ 4.3.2