My problems, ranked from most to least favourite:

1. Canadian Cactus Competition (12p)
2. Shell Swap Scam (5p)
3. Paparazzi (17p)
4. Liars (15p)
5. No More Telemarketers (7p)
6. Egg Dropping (25p)
7. Alchemy 2 (7p)
8. Signpost (20p)
9. No More Coyotes (15p)
10. No More Cell Phone Messaging (10p)
11. Fluke (10p)
12. Work Experience (10p)
13. Arithmetic Sequence Data Structure (25p)
14. No More Snakes and Ladders (17p)
15. Mixed Doubles (7p)
16. Alchemy (20p)
17. Page Turning (5p)
18. LIS Reconstruction (7p)
19. Potted Plants (12p)
20. A Boring Problem (10p)
21. Page Turning (5p)
22. No More Math Homework (12p)
23. Secret Sequence (7p)
24. Nils++ (17p)
25. Permutation Counting (12p)
26. No More Separation (5p)
27. Maximum Damage (10p)
28. Travel Budget (20p)
29. Rumour (15p)
30. No More Solitaire (20p)
31. Number Pyramid (7p)
32. Snap (5p)
33. Betting (5p)
34. Topology (15p)
35. Circle Cutting (7p)
36. Mirror Maze (17p)
37. Hopping Kangaroos (17p)