Hello Everyone ,I am trying to solve this problem for some time now.I could not find an explanation in English for it anywhere . The question is related to DP (on trees) . In Brief the problem asks you to find the minimum number of edges to be removed to isolate a subtree of size p .The original problem statement can be seen here.Thanks in advance :)

HI Everyone out there,Hope this post find you in best of your spirits.Yesterday I was attempting this SPOJ Problem here.I got the idea instantly that the state of dp will be defined as dp[node][flag] where flag denotes whether ticket has to be bought for this node or not.But I am having a hard time implementing it... Can somebody please help me in its implementation.Thanks and Have a nice day.

Hi everyone,I have been trying this question SPOJ K-QUERYfor 2 days now.After unsuccessful attempts to come up with logic,I finally referred Blogs available online.But I am neither getting head nor tail of the logic. Can someone please tell me the formation of fenwick/segment tree that is used(especially the technique used).It will be a great help.Please! Thanks in advance.

__Hi everyone.I was trying to practice DP and then I encountered this question 161D - Distance in Tree.I have got the basic idea But I do not know how the editorialist gave the second recurrence relation. Can anyone please spare his precious time and help me regarding the same. Regards and Thanks in advance.

Hi everyone I have been trying to solve this problem for a lot of time Timus 1846()..I know that this is a problem of segment tree .Can anyone please help me regarding the same. REGARDS..

Hello Codeforces members.. I am a newbie in competitive programming but I have developed bad habit of seeing the solutions in 1-2 days... I really try hard during those 1-2 days devoting 7-8 hours on the day... What should I do.....????????????????? Another habit is to copy-paste the difficult code . Can anyone please help me regarding the same .It will be a great help. Regards.