I was looking for you for my birthday party i walked 3 floors above your apartment i walked in total of 14 floors/3/+/-11/=3+11=14
Then,i walked back down 11 floors
I was at the gym. you only needed to walk 0+4=4 meaning you just need to walk 4 floors below my apartment
Today i planed to go to the gym then to the office.i will have to walk 6 floors down to the gym.and then i will have to walk 12 floors down to the office i will be at (-6)+12=14,which means i would be located 14 floor below my apartment at the office.