Solution of the task: IMO Shortlist 1993 problem A9
Solutions
#Time ↓TaskUserSolutionCorrectness
111388 years, 6 monthsIMO Shortlist 1993 problem A9Lugo empty  
16713 years, 7 monthsIMO Shortlist 1993 problem A9dcevid to do  
6313 years, 7 monthsIMO Shortlist 1993 problem A9grga to do