Solution of the task: IMO Shortlist 2006 problem A4
Solutions
#Time ↓TaskUserSolutionCorrectness
192083 years, 10 monthsIMO Shortlist 2006 problem A411235 empty  
115179 years, 1 monthIMO Shortlist 2006 problem A4PETARMAT empty  
371411 years, 8 monthsIMO Shortlist 2006 problem A4leonstaresinic empty