Today, I had the honour to witness the situation where the big brother shot out to help colleagues solve the problem. The colleague replied less than 1 minute after the colleague issued the question. It really made me admire, so I recorded it.
For the problem, please see the picture:
Attach the big brother's reply:
The problem of int overflow has always existed, but I have not noticed it, and the basic upload of id is not long, and it is often a string type, so I have not encountered this problem myself, but look at the reply of the big brother today, yes This knowledge point has practical knowledge and is no longer theoretical.