Solution of the task: IMO Shortlist 2010 problem A7
Solutions
#Time ↓TaskUserSolutionCorrectness
155244 years, 1 monthIMO Shortlist 2010 problem A7marin049 empty  
136645 years, 2 monthsIMO Shortlist 2010 problem A7PETARMAT empty  
115295 years, 11 monthsIMO Shortlist 2010 problem A7abeker empty