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做了组数据分享一下~不过是20的,和题目不同,一开始搞错了 现在是YES,可以自己改一下. 20 20 S..................a aXXXXXXXXXXAXXXXXXX. .X........bb......X. .XbXXXXXXXXXXXXXX.X. .X.X.....c......X.X. aXbX.XXXXXXXXXX.X.X. .X.X.X........X.X.X. .X.X.X.XDXXXX.X.X.X. .X.X.X.X..XXX.X.X.X. .X.X.X.X.XG.X.X.X.X. .X.XcX.X.XXEX.CeX.X. .X.X.X.X.e..X.X.X.X. .X.X.X.XXXXXX.X.X.X. .X.X.X........X.X.X. .X.X.XXXXXXXXXX.X.X. .X.X..c.........X.X. .X.XXXXXXXBXXXXXX.X. .X........b.......X. .XXXXXXXXXXXXXXXXXX. .d..e...a........a.. Followed by:
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