Solution of the task: IMO Shortlist 2007 problem N4
Solutions
#Time ↓TaskUserSolutionCorrectness
194543 years, 9 monthsIMO Shortlist 2007 problem N411235 empty  
126448 years, 7 monthsIMO Shortlist 2007 problem N4PETARMAT empty  
120428 years, 10 monthsIMO Shortlist 2007 problem N4marin049 empty  
111749 years, 3 monthsIMO Shortlist 2007 problem N4abeker empty