Solved by xiaowuc1

#	Title	# Solved	Avg. Tries
7868	Hamming Problem	212	2.03
7869	Circular Area	1,124	3.33
7872	Cave	8	2.13
7873	Decision	22	2.09
7879	Jack’s socks	13	1.69
7881	YAPTCHA	97	2.02
7882	Skyscrapers	25	2.16
7891	Can you add this?	5,255	1.22
7893	Vase collection	5	3.00
7894	Big Number	649	2.71
7898	Euro Efficiency	4	2.75
7900	Hansel and Grethel	9	1.33
7901	Floors	7	1.57
7903	Pearls	10	1.30
7905	Input	12	3.67
7908	Will It Stop?	70	1.56
7910	Gophers	30	2.30
7916	Cross Spider	54	4.26
7921	Dziadkowie	26	6.42
7922	Ciasteczkowy potwór	6	2.00
7946	Supermarket	78	1.17
7947	Koncert	253	1.41
7956	Liczby piwne	10	3.70
7967	Balance	19	1.84
7976	Sequence	133	2.89
7977	DNA	145	1.81
7982	Inversions	256	2.28
7983	Do It Tomorrow	923	2.07
7989	The Bridge	31	3.52
7998	Chocolate	50	1.22
8002	Mastermind II	18	1.78
8009	Holiday Costing	10	1.90
8012	Byteasar the Travelling Salesman	779	1.78
8016	Insulator	42	1.60
8017	Parcel	14	3.07
8026	Pionek	8	3.00
8027	Antiprime Numbers	20	1.45
8029	Density Map	41	1.39
8030	Intervals	33	1.85
8031	Weaker Goldbach	21	5.71
8040	Goldmine	20	2.80
8044	Viruses	10	2.80
8050	Lollobrigida	10	1.90
8055	Polygons	9	2.89
8061	Bitmap	196	2.12
8068	Water	71	3.01
8071	One-sequence	30	1.73
8073	Road Net	47	1.40
8077	Frogman	17	1.29
8087	XOR Gates	12	1.25

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