Solution of the task: IMO Shortlist 1999 problem C5
Solutions
#Time ↓TaskUserSolutionCorrectness
149467 years, 8 monthsIMO Shortlist 1999 problem C5nolo_moses empty  
126898 years, 5 monthsIMO Shortlist 1999 problem C5PETARMAT empty  
854810 years, 3 monthsIMO Shortlist 1999 problem C5dpaleka empty