Solution of the task: IMO Shortlist 1984 problem 12
Solutions
#Time ↓TaskUserSolutionCorrectness
138327 years, 9 monthsIMO Shortlist 1984 problem 12PETARMAT empty  
134287 years, 10 monthsIMO Shortlist 1984 problem 12IvanSincic empty  
87109 years, 9 monthsIMO Shortlist 1984 problem 12andrija_ empty