15-th summer conference International mathematical Tournament of towns

Pereslavl-Zalesskij, 31.07.2003-09.08.2003.

Problem 2. The complexity of summation

Yu. Kudryashov, A. Skopenkov, with participation of I. Nikokoshev

Tasks

4 pages (page 3 and 4 suggested after the semifinal).
6 pages: