User contributions
- 00:00, 10 October 2020 (diff | hist) . . (-459) . . 1976 USAMO Problems/Problem 3 (current)
- 23:57, 9 October 2020 (diff | hist) . . (+21) . . 1976 USAMO Problems/Problem 3
- 23:55, 9 October 2020 (diff | hist) . . (+439) . . 1976 USAMO Problems/Problem 3