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LCA problems
Problem Name Online Judge Contest Difficulty Level
1 Lowest Common Ancestor Categories SPOJ 1
2 Query on a tree II Categories SPOJ 1
3 Distance Query Categories SPOJ 2
4 Flea circus Categories UVA 3
5 Distance in the Tree Categories Timus 3
6 Ants Colony Categories UVA 3
7 Ants Colony Categories URI 3
8 Lowest Common Ancestor Categories CodeChef 3
9 Fools and Roads Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
10 A and B and Lecture Rooms Categories Codeforces Codeforces Round #294 (Div. 2) 4
11 Design Tutorial: Inverse the Problem Categories Codeforces Codeforces Round #270 4
12 Tree 2 Categories Timus 4
13 Misha, Grisha and Underground Categories Codeforces Codeforces Round #425 (Div. 2) 5
14 Duff in the Army Categories Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 5
15 FloatingMedian Categories TopCoder SRM 310 - Div1 medium - Div2 hard] (9990) 6
16 Turning Turtles Categories Timus 7