Solution of the task: IMO Shortlist 1972 problem 12
Solutions
#Time ↓TaskUserSolutionCorrectness
223811 year, 10 monthsIMO Shortlist 1972 problem 12ToplaCokolada empty  
538710 years, 6 monthsIMO Shortlist 1972 problem 12ivl empty  
398511 yearsIMO Shortlist 1972 problem 12ad empty