生活待我如初恋

摘要： In this cafeteria, the N tables are all ordered in one line, where table number 1 is the closest to the window and table number N is the closest to th 阅读全文

摘要： AbdelKader enjoys math. He feels very frustrated whenever he sees an incorrect equation and so he tries to make it correct as quickly as possible! Giv 阅读全文