Correct Solutions by,
- Toshihiro Shimizu Kawasaki, Japan
- Alper Balcı Bilkent University
- Muhammed Kızılkaya Kabataş Erkek Lisesi, Istanbul
- Vedat Deveci Istanbul
- Henrik Aberg Gothenburg, Sweden
- Albert Stadler Herrliberg, Switzerland
- Hamza Kurt
- Şevket Onur Yılmaz Kabataş Erkek Lisesi, Istanbul
- Mehmet Özgün Cihangir METU, Ankara
- Mountassir Farid Awalee Consulting Paris, France
- Tan Özalp METU, Ankara
- Mümtaz Ulaş Keskin Antalya
- Murat Apaydın Bilkent University
- Mukammet Batyrov Ashgabat City Saparmurat Turkmenbashy School, Turkmenistan
- Chui Tsz Fung Hong Kong, China
- Barış Koyuncu Özel ENKA Lisesi, Istanbul
- Berke Yavuz Bilkent University
- Steffen Weber Ismaning, Germany
- Constantinos Calomitsini Yanya University, Greece
- Mustafa Kaynak Giresun University, Giresun
- Haruhisa Oda The University Of Tokyo, Japan
- Roger Bengtsson Lund, Sweden
- İbrahim Berkay Ceylan Giresun Fen Lisesi
- Cristian Baeza Miranda Pontifical Catholic University of Chile
- İsmet Avar Buca Fen Lisesi
- Kee-Wai Lau Hong Kong, China
- Amir Alakbarli Baku, Azerbaijan
- Magnus Jakobsson Lund, Sweden
- Berk Tınaz Bilkent University alumni
- Arsen Berk Tekdaş METU, Ankara
- Abdulkadir Tanrıvedi Eskişehir
- Jepbar Asgarov
- Serdar Hocayev Dashoguz, Turkmenistan
- Halil İbrahim Dokuyucu Trabzon
- Merdangeldi Bayramov Turkmen State University, Ashgabat
- Nihat Habizada Baku Higher Oil School, Azerbaijan
- Mesut Yiğit Jackson Laboratory Farmington, USA
- Mehran Hosseini-Pishrobat Bilkent University
- Ahmet Yüksel Aydın
Solution: http://www.fen.bilkent.edu.tr/~cvmath/Problem/2009a.pdf