Though I have tried a lot of D and E problems after the contests but I don't remember if I have solved more than 5-6 of them.Even after reading the editorials,I couldn't solve them.There may be some mistake from my side too but I wanted to bring into light a imp point that whenever I try to read the editorial,my rhythm breaks due to poor English(sorry but its true) and it appears that they are just English google translation of Russian editorials.Pictorial representations can also be used if possible like done in Topcoder.

So this is a humble request to the editorialists to please take this into consideration as their motive to make the readers understand the question is not getting fulfilled.I appreciate their effort from the bottom of my heart.And to those who are reading this post please advise me something so that I may also improve and become able to solve the D and E problems.