Preface; Congress Committees; Sponsors; CONTENTS; Prizes; PART A - PLENARY LECTURES; Integrable Combinatorics P. Di Francesco; 1. Introduction; 2. 1+1D Lorentzian gravity, integrability and trees; 2.1. 1+1D Lorentzian gravity; 2.2. Integrability; 2.3. Trees; 3. Planar maps and g…