Solution of the task: IMO Shortlist 2010 problem A7
Solutions
#Time ↓TaskUserSolutionCorrectness
155247 years, 3 monthsIMO Shortlist 2010 problem A7marin049 empty  
136648 years, 4 monthsIMO Shortlist 2010 problem A7PETARMAT empty  
115299 years, 1 monthIMO Shortlist 2010 problem A7abeker empty