Lately I've noticed that there have been very few(almost none) Graph,Binary Search,Data Structures,Two Pointer,Dp (and other known concept) problems in Div.2 C and Div2 D. Most of Div2C&D have been contructive problems. It's kind of a trend now. I don't hate these problems but why are Div2 A,B,C,D all based on some logic and don't use any of the well known concepts like binary search,Data Structures,graph,Dp etc. I mean I would like to see all kind of problems rather than just constructive in every contest. Have you guys noticed this as well ?Why are contest setters doing so?