15 September 2025

• 15:1115:11, 15 September 2025 diff hist +2,932 N 1990 APMO Problems/Problem 5 Created page with "Not a perfect solution, but I think it works. \\ The construction would obviously depend on the parity of n, let's denote m to be <math>ceiling((n-1)/2)</math>, so either <mat..." current

13 September 2025

• 20:1420:14, 13 September 2025 diff hist +1,323 1969 IMO Problems/Problem 2 →Solution current