cannot be happier

From 7:30 -> 12:00, I was debugging and actually redesigning my way of mapping!!!
Finally, finally, I am too happy to cry.
Though I didnt manage to do the bonus part, still I am so satisfied.
I know my way of evaluating is kinda stupid, but I it can pass the cases now.
I used a stack to collect garbage and then expect fewer memory leak. I used a stack to push all the operands list map. On every level of apply function, I create a new map and push a pointer to the map to the global stack. After every apply, I pop out one pointer from the stack. When I enter the apply function I usually clear the garbage bin.
It is not amazing, but haha.
I read Kangoo's, he used one stack and minor local ones, push and pop a lot. It is complicated. It was like talking to the buddy face to face. So when seeing him in LG5 I almost continued the talk between us.
I think I completely understand Winson's joy. The process was hard and I nearly gave sometimes. When it was 11 pm I still had a bug about passing the list as parameter and didnt find it out. When my buddy called and asked me whether I would like to go to Norelle's Bday party, I almost collasped...
Wakaka... I am so glad that I didnt give up. So Happy bday to Norelle... I donnu. I just don't take bday serious. I donnu what to celebrate. I guess I will call my mum on my Bday. It is just pointless to have cake for oneself only or whatever. Oh, I can find one meaning for friends to celebrate one's bday! It is a chance to have fun and thank the one for being caring. So I probably should thank my close friends for taking care of me for the previous year. Mmm sounds reasonable. But I am always thankful and I prefer to be nice to friends every day instead of just that particular day and because of some gifts. Well, on the other hand giving and getting a gift is always enjoyable... So I just give presents to friends when I find sth right for them.