https://partycakesblog.com/2013/02/25/%ce%b9%cf%83%ce%bf%ce%bc%ce%b5%ce%b3%ce%ad%ce%b8%ce%b7-%ce%bc%cf%80%ce%b1%ce%bb%ce%ac%ce%ba%ce%b9%ce%b1-evenly-sized-balls/
Ισομεγέθη Μπαλάκια / Evenly sized balls