24  Algorithm Analysis and Complexity 
36  Hashing
24  Skiplist/AVL/Binary trees/Other
16  Quadtrees and spatial data

Q   Weight   Topic
------------------------------------------------------
1       12   complexity analysis
2       12   asymptotics
3       12   hashing
4       12   hashing
5       12   hashing
6       12   skiplist/AVL/BST/other mechanics
7       12   skiplist/AVL/BST/other mechanics
8       16   spatial data and PR quadtree