Скачать или смотреть [Review] USA(J)MO 2021

All nine problems of USAMO 2021! Problems at https://web.evanchen.cc/problems.html.

00:00 Intro
01:03 JMO 1: Function
05:17 JMO 4: Carina's pins
10:55 JMO 3: Downwards triangle
14:50 USAMO 1: Rectangles
16:48 USAMO 4: gcd set
22:05 USAMO 2: Planar park
28:20 USAMO 5: System of equations
38:45 USAMO 3: Trominoes
48:50 USAMO 6: Hexagon

Broadcasted at   / venhance   which runs Fridays 8pm Eastern time
Schedule at https://web.evanchen.cc/videos.html

Come join my students in watching me be dumb on camera, whether it's missing MathCounts questions, misreading shortlist geometry problems, forgetting a Spawning Pool, running Baba into corners, and more!