Solution of the task: IMO Shortlist 2015 problem N6
Solutions
#Time ↓TaskUserSolutionCorrectness
203856 monthsIMO Shortlist 2015 problem N611235 empty  
143685 yearsIMO Shortlist 2015 problem N6marin049 empty  
144205 yearsIMO Shortlist 2015 problem N6PETARMAT empty