A Possible Tree

problem — every listed problem · all sets

internal id

p-664f2dff

appearances

urumqi-2017 (urumqi-2017) — I

held

not recorded yet

solve online

Luogu 洛谷 (Luògǔ) id P17267

data

problemsets/urumqi-2017.yaml

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