This event consists of two co-located conferences over a four-day period. These two conferences are the 17th Algorithms and Data Structures Symposium (WADS) and the 33rd Canadian Conference on Computational Geometry (CCCG). WADS is intended as a forum for researchers in the area of design and analysis of algorithms and data structures. We invite submissions of papers presenting original research on the theory and application of algorithms and data structures in all areas, including combinatorics, computational geometry, databases, graphics, and…