Xi'an Regional Contest 2002

	#	Title
A	9813	Computing
B	9814	Coding of Permutations
C	9815	Cabric Number Problem
D	9816	Number of Locks
E	9817	Necklace of Beads
F	9818	Quantity of White Mice
G	9819	Color Change of Go Game Pieces
H	9820	Placement of Keys
I	9821	Selecting the Optimal Teaching Fiends