list of classical problems

97942-shanghai-2011-preliminary-1

ID	NAME	QUALITY	USERS	ACC %	DIFFICULTY C I
2713	Can you answer these queries IV	59	4173	17.56	21 21
9511	24-Puzzle		23	21.49
9512	Bombing		84	22.84	17 17
9513	Game		18	30.16
9515	Dwarven Sniper´s Hunting		13	60.00
9516	XOR Equations		14	17.65
9517	Unlock the Cellphone		11	26.60
9518	The Time of Day	1	37	24.24	17 34
9519	Distinct Submatrices	1	22	19.85	50 50
9520	Tanks	1	14	11.72	34 34