My solutions to the 2020 Rudolf Ortvay Competition, in which I won first prize with a top score among undergraduates.

Problems page [pdf]

• Problem 7 (60 points)
• Problem 11 (100 points and special prize)
• Problem 12 (100 points)
• Problem 13 (100 points)
• Problem 15 (100 points)
• Problem 17 (80 points)
• Problem 19 (100 points)
• Problem 20 (50 points)
• Problem 21 (0 points) oops!
• Problem 22 (100 points)