Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 20581

Properties and applications of data structures, such as space lower bounds, or time complexity of insertion and deletion of objects.

9 votes
2 answers
383 views

O(n)-space, polylog-time subtree sums in incremental forests?

Consider a forest $G$ of $n$ vertices $v_1, \dots, v_n$ arranged left to right with edges from child to parent always going to the left, i.e. if the parent of vertex $v_i$ is $v_j$, then $j < i$. Addi …
Mathias Rav's user avatar
2 votes

O(n)-space, polylog-time subtree sums in incremental forests?

Thanks to Dmytro Taranovsky for the thorough answer. Here's my attempt to rephrase his answer in my own words. Without loss of generality, assume that $G$ consists of a single tree. First, we reduce t …
Mathias Rav's user avatar