Problem index

Welcome to the Universidade Federal do Rio Grande do Norte Qualifying Contest IV! We have prepared the following problems for you:

A. How old are you?
B. Decoding the message.
C. Magic square palindromes.
D. Only I did it!
E. O: dah dah dah!
F. Let's swim!
G. Tarot scores.
H. Reaching the fix-point.
I. The silver bullet.
J. Transportation system.
K. Improved tic-tac-toe.

Enjoy!

Problem setters: Daniel Amaral de Medeiros Rocha, David Deharbe, Diego Caminha Barbosa de Oliveira, Herbert de Melo Duarte, S�rgio Queiroz de Medeiros.
Universidade Federal do Rio Grande do Norte Qualifying Contest IV, June 9th, 2007.