Correct Solutions by,
- Toshihiro Shimizu Kawasaki, Japan
- Burak Öçalan, University of Illinois at Urbana-Champaign, ABD
- Choi Min Kyu, South Korea
- Mustafa Burak Topal, İstanbul
- Ahmet Hakan Yılmaz
- Vedat Deveci, İstanbul
- Roger Bengtsson, Lund, Sweden
- Magnus Jakobsson, Lund, Sweden
Solution: http://www.fen.bilkent.edu.tr/~cvmath/Problem/2301a.pdf