Hello, A Secret Mission — LOJ , Min Max Roads — LOJ , LCA — SPOJ , Kth Ancestor — HackerRank

Here I found a few LCA / LCA modifications :)

Thank you so much for taking the time to compile all these lists.

I really appreciate your work!

504E - Misha and LCP on Tree

LCA + hash

Thanks for gathering all problems with same tag!! I was looking for LCA ones :D

Another LCA problmes:

Qtree spoj : LCA + Heavy-light Decomposition + segment tree

372D - Choosing Subtree is Fun : LCA + sorting + dfs(starting time calculating) + two_pointer (or Heavy-light Decomposition)

342E - Xenia and Tree : LCA + Sqrt Decomposition

629E - Famil Door and Roads

A great LCA problem from codechef : TOMJERGA

916E - Jamie and Tree

the newest one :)

I wrote code for 191C but I got verdict: wrong answer on test 3. please, tell to me, why my code does not works correctly. link: https://codeforces.com/contest/191/submission/39604271

986E - Prince's Problem

Nice problem :)

http://www.spoj.com/problems/DISQUERY/ this is problem based only on LCA. this problem is from the SPOJ. update: this problem is not based only on lca, sorry for mistake.

https://codeforces.com/contest/1062/problem/E Nice LCA problem ^_^

https://www.hackerrank.com/contests/101hack26/challenges/sherlock-and-queries-on-the-graph (LCA + Bridge finding) :) and thank you so much for your list

Two easy ones and a harder one

Kattis — tourists Kattis — boxes Kattis — pokegene

Thanks for these problem list and i was waited for this

this problem from a recent round

1-Trees and Queries

https://codeforces.com/contest/1328/problem/E

in the recently contest

csacademy's Identifying-Infected is a LCA tagged problem. How to approach this? Sorry for necro-bumping.

LCA problem from the contest just now codeforces.com/contest/1702/problem/G2

Highly recommend))) 786D - Rap God

if you have provided the solution or explanation on how to solve such problems will be of great help. thnxs