Problem 0 https://www.youtube.com/watch?v=Tl_7pLBpybQ 0:00 14:15
Problem 1 https://youtu.be/Tl_7pLBpybQ?t=855 14:15 29:31:00
Problem 2 https://youtu.be/Tl_7pLBpybQ?t=1771 29:31:00 49:09:00
Problem 3 https://youtu.be/Tl_7pLBpybQ?t=2949 49:09:00 1:05:40
Problem 4 https://youtu.be/Tl_7pLBpybQ?t=3940 1:05:40 1:16:30
Problem 5 https://youtu.be/Tl_7pLBpybQ?t=4590 1:16:30 1:48:35
Problem 6 https://youtu.be/Tl_7pLBpybQ?t=6515 1:48:35 2:14:55
