警示后人

P6348 [PA2011] Journeys

5k_sync_closer @ 2023-09-16 08:09:33

连双向边要用两个虚点，否则 (a,b),(c,d) 就会连到虚点再连回来，这样 (a,b) 内的点就会互相连边，(c,d) 同理。

by User_Unauthorized @ 2023-09-16 08:42:40

sto 5k orz

by yshpdyt @ 2023-10-05 16:57:49

sto 5k orz

by appear_hope @ 2024-07-19 11:28:51

Thank

by ybc15_tanhaotian @ 2024-07-25 08:23:46

Thank

by thousands_of_years @ 2024-12-16 17:46:42

Thank

by TainityAnle @ 2024-12-18 14:18:34

@5k_sync_closer

sto %%%

ty!!!

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