There are solutions for the following Google Code Jam problems:

1. 2022 Qualification Round - E. Twisty Little Passages (problem site)
2. 2022 Qualification Round - D. Chains Reactions (problem site)
3. 2022 Qualification Round - C. d1000000 (problem site)
4. 2022 Qualification Round - B. 3D Printing (problem site)
5. 2022 Qualification Round - A. Punched Cards (problem site)
6. 2020 Qualification Round - D. ESAb ATAd (problem site)
7. 2020 Qualification Round - C. Parenting Partnering Returns (problem site)
8. 2020 Qualification Round - B. Nesting Depth (problem site)
9. 2020 Qualification Round - A. Vestigium (problem site)
10. 2019 Round 2 - C. New Elements: Part 2 (problem site)
11. 2019 Round 2 - B. Pottery Lottery (problem site)
12. 2019 Round 2 - A. New Elements: Part 1 (problem site)
13. 2019 Round 1A - C. Alien Rhyme (problem site)
14. 2019 Round 1A - B. Golf Gophers (problem site)
15. 2019 Round 1A - A. Pylons (problem site)
16. 2019 Qualification Round - D. Dat Bae (problem site)
17. 2019 Qualification Round - C. Cryptopangrams (problem site)
18. 2019 Qualification Round - B. You Can Go Your Own Way (problem site)
19. 2019 Qualification Round - A. Foregone Solution (problem site)
20. 2018 Round 2 - A. Falling Balls (problem site)
21. 2018 Round 1C - C. Ant Stack (problem site)
22. 2018 Round 1C - B. Lollipop Shop (problem site)
23. 2018 Round 1C - A. A Whole New Word (problem site)
24. 2018 Qualification Round - C. Go, Gopher! (problem site)
25. 2018 Qualification Round - B. Trouble Sort (problem site)
26. 2018 Qualification Round - A. Saving The Universe Again (problem site)
27. 2018 Practice Session - D. Bathroom Stalls (problem site)
28. 2018 Practice Session - C. Steed 2: Cruise Control (problem site)
29. 2018 Practice Session - B. Senate Evacuation (problem site)
30. 2018 Practice Session - A. Number Guessing (problem site)
31. 2017 Round 2 - B. Roller Coaster Scheduling (problem site)
32. 2017 Round 2 - A. Fresh Chocolate (problem site)
33. 2017 Round 1C - B. Parenting Partnering (problem site)
34. 2017 Round 1C - A. Ample Syrup (problem site)
35. 2017 Round 1B - A. Steed 2: Cruise Control (problem site)
36. 2017 Qualification Round - D. Fashion Show (problem site)
37. 2017 Qualification Round - C. Bathroom Stalls (problem site)
38. 2017 Qualification Round - B. Tidy Numbers (problem site)
39. 2017 Qualification Round - A. Oversized Pancake Flipper (problem site)
40. 2016 Qualification Round - D. Fractiles (small) (problem site)
41. 2016 Qualification Round - C. Coin Jam (problem site)
42. 2016 Qualification Round - B. Revenge of the Pancakes (problem site)
43. 2016 Qualification Round - A. Counting Sheep (problem site)
44. 2014 Qualification Round - B. Cookie Clicker Alpha (problem site)
45. 2014 Qualification Round - A. Magic Trick (problem site)
46. 2013 Qualification Round - C. Fair and Square (small) (problem site)
47. 2013 Qualification Round - A. Tick-Tac-Toe-Tomek (problem site)
48. 2012 Qualification Round - B. Dancing With The Googlers (problem site)
49. 2012 Qualification Round - A. Speaking In Tongues (problem site)
50. 2008 Round 2 - A. Cheating a Boolean Tree (problem site)
51. 2008 Round 1B - C. Mousetrap (problem site)
52. 2008 Round 1B - A. Crop Triangles (problem site)
53. 2008 Round 1A - B. Milkshakes (problem site)
54. 2008 Round 1A - A. Minimum Scalar Product (problem site)
55. 2008 Qualification Round - B. Train Timetable (problem site)
56. 2008 Qualification Round - A. Saving the Universe (problem site)