5 papers
An Improved Deterministic Parameterized Algorithm for Cactus Vertex Deletion
Yuuki Aoike, Tatsuya Gima, Tesshu Hanaka +5
A cactus is a connected graph that does not contain as a minor. Given a graph and integer , Cactus Vertex Deletion (also known as Diamond Hitting Se…
Longest Common Subsequence in Sublinear Space
Masashi Kiyomi, Takashi Horiyama, Yota Otachi
We present the first -space polynomial-time algorithm for computing the length of a longest common subsequence. Given two strings of length , the algorithm runs i…
Parameterized Complexity of -Path Packing
Rémy Belmonte, Tesshu Hanaka, Masaaki Kanzaki +6
Given a graph , , and integers and , the \textsc{-Path Packing} problem asks to find vertex-disjoint paths of length that h…
How Bad is the Freedom to Flood-It?
Rémy Belmonte, Mehdi Khosravian Ghadikolaei, Masashi Kiyomi +2
Fixed-Flood-It and Free-Flood-It are combinatorial problems on graphs that generalize a very popular puzzle called Flood-It. Both problems consist of recoloring moves whose goal is…
Space-Efficient Algorithms for Longest Increasing Subsequence
Masashi Kiyomi, Hirotaka Ono, Yota Otachi +2
Given a sequence of integers, we want to find a longest increasing subsequence of the sequence. It is known that this problem can be solved in time and space. Our goa…