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献给为2157奋斗的战友们一 组数据过了这组肯定能过这道题

Posted by y05dzz at 2007-08-23 10:21:28 on Problem 2157
20 20
S...................
.XXXXXXXXXXAXXXXXXX.
.X................X.
.X.XXXXXXXXXXXXXX.X.
.X.X............X.X.
.X.X.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.X.X.X.XXEX.C.X.X.
.X.X.X.X....X.X.X.X.
.X.X.X.XXXXXX.X.X.X.
.X.X.X........X.X.X.
.X.X.XXXXXXXXXX.X.X.
.X.X............X.X.
.X.XXXXXXXBXXXXXX.X.
.X................X.
.XXXXXXXXXXXXXXXXXX.
....................

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