Algorithms and Complexity : 5th Italian Conference CIAC 2003 Rome Italy May 28–30 2003. Proceedings This book constitutes the refereed proceedings of the 5th Italian Conference on Algorithms and Computation CIAC 2003 held in Rome Italy in May 2003. The 23 revised full papers presented were carefully reviewed and selected from 57 submissions. Among the topics addressed are complexity complexity theory geometric computing matching online algorithms combinatorial optimization computational graph theory approximation algorithms network algorithms routing and scheduling