Problem 0: 08:00 - 13:00
Problem 1: 13:00 - 20:00
Problem 2: 26:00 - 34:00
Problem 3: 48:00 - 1:07:00
Problem 4: 1:13:00 - 1:19:00
Problem 5: 1:21:00 - 1:33:00
Problem 6: 1:3:42:00 - 13:00
Problem 7: 1:44:00 - 2:00:00
Problem 8: 02:01:00 - 02:37:00
Problem 9: 02:37:00 - 02:49:00
