Summon

problem — every listed problem · all sets

internal id
p-a3a97314
appearances
nanchang-2019 (nanchang-2019) — J
held
not recorded yet
solve online
Luogu 洛谷 (Luògǔ) id P17813
data
problemsets/nanchang-2019.yaml

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