摘要： DescriptionBefore the invention of book-printing, it was very hard to make a copy of a book. All the contents had to be re-written by hand by so calle... 阅读全文

摘要： My birthday is coming up and traditionally I’m serving pie. Not just one pie, no, I have a number N of them, of various tastes and of various sizes. F... 阅读全文

摘要： Given several segments of line (int the X axis) with coordinates [Li , Ri ]. You are to choose the minimal amount of them, such they would completely ... 阅读全文