Combinatorial Algorithms: 32nd International Workshop, IWOCA 2021, Ottawa, ON, Canada, July 5-7, 202

Invited Papers.- Relaxed and Approximate Graph Realizations.- Search for combinatorial objects using lattice algorithms - revisited.- Contributed Papers.- Linear Algorithms for Red Blue Domination in Convex Bipartite Graphs.- Combinatorics and algorithms for quasi-chain graphs.- Composed Degree-Distance Realizations of Graphs.- All Subgraphs of a Wheel are 5-Coupled-Choosable.- Conflict-Free Coloring: Graphs of Bounded Clique Width and Intersection Graphs.- Edge exploration of temporal graphs.- Optimal monomial quadratization for ODE systems.- A Hamilton Cycle in the k-Sided Pancake Network.- Algorithms and Complexity of s-Club Cluster Vertex Deletion.- Covering Convex Polygons by Two Congruent Disks.- The Tandem Duplication Distance Problem is hard over bounded alphabets.- On the oriented coloring of the disjoint union of graphs.- The Pony Express Communication Problem.- Skyline Groups are Ideals. An efficient algorithm for enumerating skyline groups.- Vertex Cover at Distance on H-free Graphs.- On an Ordering Problem in Weighted Hypergraphs.- An Efficient Noisy Binary Search in Graphs via Median Approximation.- A study on the existence of null labelling for 3-hypergraphs.- Piercing All Translates of a Set of Axis-Parallel Rectangles.- A triangle process on regular graphs.- Complexity and Algorithms for MUL-Tree Pruning.- Makespan Trade-offs for Visiting Triangle Edges.- Augmenting a Tree to a k-Arbor-Connected Graph with Pagenumber k.- Approximation algorithms for hitting subgraphs.- Isomorphic unordered labeled trees up to substitution ciphering.- Intersecting Disks using Two Congruent Disks.- Disjoint Paths and Connected Subgraphs for H-Free Graphs.- Prophet Secretary for k-Knapsack and l-Matroid Intersection via Continuous Exchange Property.- Minimum Eccentricity Shortest Path Problem with Respect to Structural Parameters.- Non-preemptive tree packing.- Card-based Cryptographic Protocols for Three-input Functions Using Private Operations.- Königsberg Sightseeing: Eulerian Walks in Temporal Graphs.- Reconfiguring Simple s; t Hamiltonian Paths in Rectangular Grid Graphs.- New Approximations and Hardness Results for Submodular Partitioning Problems.- An FPT Algorithm for Matching Cut and d-Cut.- Backtrack search for parallelisms of projective spaces.- Approximating Multistage Matching Problems.- Heuristically enhanced IPO Algorithms for Covering Array Generation.