{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"zn-CH\"\u003e\n 由于近日阴雨连天,约翰的农场中中积水汇聚成一个个不同的池塘,农场可以用 N x M (1 \u003c\u003d N \u003c\u003d 100; 1 \u003c\u003d M \u003c\u003d 100) 的正方形来表示。农场中的每个格子可以用\u0027W\u0027或者是\u0027.\u0027来分别代表积水或者土地,约翰想知道他的农场中有多少池塘。池塘的定义:一片相互连通的积水。任何一个正方形格子被认为和与它相邻的8个格子相连。\n \u003cbr\u003e \n \u003cbr\u003e给你约翰农场的航拍图,确定有多少池塘\n \u003c/div\u003e"}},{"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,每个字符代表约翰的农场的土地情况。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: 池塘的数量\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,右边三块\n \u003c/div\u003e"}}]}