50分求助!

P1200 [USACO1.1] 你的飞碟在这儿 Your Ride Is Here

@[BZHZS](/user/359492) 否则输出“STAY”
by 林聪 @ 2021-02-22 23:17:12

谢谢大佬
by BZHZS @ 2021-02-23 10:13:08

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