回复：welcome back home,外国人. you got the offer:):)

haha, you read everything. That's several years ago. This Lion question was asked by a quant, I had no problem with it. What kicked me was a managerial question during a teleconference interview with a London senior manager. The question did not seem to have the answer and I did something similar as you did here. Something like: "I would not let things turn this bad, but if that's the case I quit.". Well he did not get the joke and seemed pissed off, and I did not even have the chance to quit. :):)