list of classical problems

97942-shanghai-2011-preliminary-1

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2713	Can you answer these queries IV	60	4388	17.75	21 21
9511	24-Puzzle		24	17.76
9512	Bombing		89	23.46	17 17
9513	Game		20	18.58
9515	Dwarven Sniper´s Hunting		18	39.34
9516	XOR Equations		18	20.00
9517	Unlock the Cellphone		12	23.64
9518	The Time of Day	1	39	21.98	17 34
9519	Distinct Submatrices	1	26	14.22	50 50
9520	Tanks	1	16	12.67	34 34