解説 英語解説

コンテスト全体の解説


A - Don't Detect Cycle


B - Self Checkout


C - Segment Tree


D - A xor B plus C


E - ReTravel


F - Origami Warp


G - Diverge and Converge


H - Two Convex Sets


I - Near Pair


J - Grid Construction


K - Sum is One


L - Long Sequence Inversion 2


M - Cartesian Trees