Ahh… Been a while since I had a day like this. Yesterday, my partner and I spent a solid 7 hours, minus about 30 min for lunch, on homework. We had seven problems. I had solved the first one about a week before (the easiest one), and then we managed to complete 2 and 3 in the first four hours. 4, and 7 took us the remaining 3 hours that we worked on it.