20250811

 Watched a football game before midnight, while having some burgers and fried chicken from KFC. Watched something else after midnight, and played piano for a while after 3. Went to sleep after breakfast and got up at 11:30 to have lunch. Slept in the afternoon, and worked for a short time after dinner, on UI. But I felt the data structure of part 3 needed to be modified a little before I continue. Slept around 7 hours (3.5 + 3.5) and completed 5 pomodoroes today - two for work and three for learning.