Solved by xiaowuc1

#	Title	# Solved	Avg. Tries
7425	Flip Game	12	1.25
7426	Buffer Manager	4	1.25
7429	Binary Search	4	1.75
7431	Garland	8	2.13
7432	Disk Tree	642	1.76
7433	Divisibility	12	1.08
7437	Lock Manager	4	5.25
7439	Highways	22	1.86
7441	False coin	23	1.78
7444	Parliament	11	1.64
7446	The dog task	2	1.00
7447	Spell checker	18	1.72
7448	Gangsters	8	2.00
7450	Bin Packing	78	2.38
7453	4 Values whose Sum is 0	5,694	4.42
7459	Angry Teacher	13	2.15
7461	Collecting Bugs	4	1.00
7465	Graveyard Design	6	1.83
7466	Honey and Milk Land	66	2.64
7467	Incredible! Impossible!	2	1.50
7468	Jackpot	1	3.00
7469	K-th Number	1,712	3.11
7471	Banal Tickets	1	2.00
7472	Crankshaft	2	1.00
7473	Destroying The Graph	2	1.00
7474	Experiment "X": Explosions Expected	1	1.00
7475	Factoring a Polynomial	14	1.36
7476	Greatest Common Increasing Subsequence	223	5.74
7477	Highways	31	2.90
7478	Invariant Polynomials	4	1.50
7479	Jogging	1	1.00
7480	Key Insertion	15	2.47
7481	Automatic Cash Terminal	85	3.53
7482	Box	368	1.91
7483	Weird sort	32	3.81
7484	Bowling	44	1.73
7487	The Very Greatest Common Divisor	70	1.41
7489	Factorials	791	2.41
7490	Zero	3,482	2.05
7494	Dancers	8	1.13
7501	Key	232	4.02
7503	Dart Challenge	13	3.46
7507	Olympic Games	237	2.60
7510	Higher Math	3,089	2.04
7511	Poking the Social	829	2.49
7512	Prime	140	5.12
7513	Pass	279	1.46
7515	Prehistoric Operating Systems	42	2.36
7516	Diophantus of Alexandria	83	3.23
7517	Tudoku	20	1.35

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