Solution of the task: IMO Shortlist 2005 problem C4
Solutions
#Time ↓TaskUserSolutionCorrectness
205691 year, 3 monthsIMO Shortlist 2005 problem C411235 empty  
115227 yearsIMO Shortlist 2005 problem C4PETARMAT empty  
70488 years, 7 monthsIMO Shortlist 2005 problem C4abeker empty