赛后vp，碰到\(C\)想半天没想出来，直接昏了（x
KEYENCE Programming Contest 2024（AtCoder Beginner Conte…
AtCoder Beginner Contest 350 \(solved: A B C D E F G\)
G. Xor-MST 使用 \(01-Trie\) 树求解.
J. 2D Travel