Loli, Yen-Jen, and a graph problem

problem — every listed problem · all sets

internal id
p-d34f6c0e
appearances
xuzhou-2019 (xuzhou-2019) — J
held
not recorded yet
solve online
Luogu 洛谷 (Luògǔ) id P17740
data
problemsets/xuzhou-2019.yaml

St statement · D test data · IV/OV input/output validator · So solutions · P complete package — filled = held.