不明白这个解的过程

P1588 [USACO07OPEN] Catch That Cow S

@[fjsmghj](/user/22368) 5->4->8->16->17
by 编码落寞 @ 2023-12-07 09:44:51


5->10->9->18->17
by 编码落寞 @ 2023-12-07 09:57:26


|