Question 4
Carina has three pins $A,B,C$, all at the origin of the coordinate plane. One move shifts one pin to an adjacent lattice point at distance $1$. What is the least number of moves needed for triangle $ABC$ to have area $2021$?
Proposed by Brandon Wang. Evan Chen’s third-party compilation; source discussion https://aops.com/community/p21498566. Source video https://youtu.be/9WNgDETHOlI?t=317.
Proposed by Brandon Wang. Evan Chen’s third-party compilation; source discussion https://aops.com/community/p21498566. Source video https://youtu.be/9WNgDETHOlI?t=317.