I went to Berkeley with EECS major and from what I could see 1 hour per week would be impossible unless you manage to somehow avoid taking any of the difficult classes, which would need to be done very strategically. Maybe you spent time in office hours instead, or having friends explain stuff to you, but I would include those in "studying time". If I'm wrong, I'd love to know how you completed major programming assignments in say compilers or operating systems, or prepared for your algorithms exams with just 1 hour per week. Sometimes it took me a couple hours just to fully understand what the professor had assigned due to language barrier (theirs), grammar (theirs), and other issues.

I also took an upper division economics class at Berkeley and that took far more than an hour of studying. Even at community college I studied my econ classes for more than an hour per week. Unless you have a photographic memory I'm not sure how you can avoid it and still get good grades. Please explain your technique.