This book constitutes the proceedings of the 13th International Conference and Workshop on
Algorithms and Computation WALCOM 2019 held in Guwahati India in February March 2019. The
30 full papers presented were carefully reviewed and selected from 100 submissions. The papers
are organized in topical headings on the facility location problem computational geometry
graph drawing graph algorithms approximation algorithms miscellaneous data structures
parallel and distributed algorithms and packing and covering.