Correct Solutions by,
- Toshihiro Shimizu Kawasaki, Japan
- Mustafa Kerem Yüksel Bilkent University
- Choi Min Kyu South Korea
- Vedat Deveci İstanbul
- Albert Stadler Herrliberg, Switzerland
- Ege Avcı Özel Zafer Fen Lisesi, Ankara
- Alex Chui United Kingdom
- Zeynep K Boston University
- Henrık Aberg Gothenburg Sweden
- Emre Bektaş Boğaziçi University
- Roger Bengtsson Lund, Sweden
- Paolo Perfetti Universit’a degli studi di Tor Vergata, Rome, Italy
- Magnus Jakobsson Lund, Sweden
- Abdulkadir Tanrıverdi Eskişehir
- Mustafa Burak Topal İstanbul
- Bahadır Berk Yılmaz TOBB University
- Recep Gökdereli
Solution: http://www.fen.bilkent.edu.tr/~cvmath/Problem/2304a.pdf