{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n 在余队长众多的农场中,有这样一片N*M大小的田地,它在下雨后积起了水。 \n \u003cbr\u003e在他的田地中,\u0027W\u0027代表积水,\u0027.\u0027代表土地,一片相互连接的积水叫做“水WA”。(每个格子被认为和相邻的8个格子相连)\n \u003cbr\u003e现在农场工作人员传回来了田地的航拍图,余队长让你帮他确定有多少个“水WA”。\n \u003c/div\u003e\n"}},{"title":"Input","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n * Line 1: N 和 M \n \u003cbr\u003e \n \u003cbr\u003e* Lines 2..N+1: M个字符一行,每个字符代表余队的农场的土地情况。每个字符中间不包含空格\n \u003c/div\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n * Line 1: \"水WA\"的数量\n \u003c/div\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e10 12\nW........WW.\n.WWW.....WWW\n....WW...WW.\n.........WW.\n.........W..\n..W......W..\n.W.W.....WW.\nW.W.W.....W.\n.W.W......W.\n..W.......W.\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e3\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n 样例解释:\n \u003cbr\u003e \n \u003cbr\u003e左下方,左上方,右边,共三块\n \u003c/div\u003e"}}]}