Solution of the task: IMO Shortlist 2011 problem N7
Solutions
#Time ↓TaskUserSolutionCorrectness
191642 years, 6 monthsIMO Shortlist 2011 problem N711235 empty  
167674 years, 11 monthsIMO Shortlist 2011 problem N7abeker empty  
138086 years, 11 monthsIMO Shortlist 2011 problem N7PETARMAT empty