Solution of the task: IMO Shortlist 1999 problem C5
Solutions
#Time ↓TaskUserSolutionCorrectness
149467 yearsIMO Shortlist 1999 problem C5nolo_moses empty  
126897 years, 9 monthsIMO Shortlist 1999 problem C5PETARMAT empty  
85489 years, 7 monthsIMO Shortlist 1999 problem C5dpaleka empty