{"trustable":false,"prependHtml":"\u003cscript\u003e\n window.katexOptions \u003d {\n delimiters: [\n {left: \u0027\\\\(\u0027, right: \u0027\\\\)\u0027, display: false},\n ]\n };\n\u003c/script\u003e\n","sections":[{"title":"","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n 找啊找啊找朋友,找到一个好朋友,敬个礼啊。。。\n 可惜朋友找不到,我们只能来找一找一个矩阵中的连通块了。。。\n 若一个方格在另一个的方格的四周(上,下,左,右,左上,左下,右上,右下)\n 则这2个方格属于同一个连通块。\n \u003c/div\u003e"}},{"title":"INPUT","value":{"format":"HTML","content":"\u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n 有多组数据\n 每组数据第一行输入n,m (n,m小于100) 表示一个矩阵的大小\n 接下来n行 每行有m个字符,来表示这个矩阵。\u0027*\u0027表示土地,‘@’\n 表示方格。最后输入0 0表示结束。\n \n \u003cbr\u003e \n \u003cbr\u003e\n \u003c/div\u003e"}},{"title":"OUTPUT","value":{"format":"HTML","content":"\n \u003cdiv class\u003d\"ptx\" lang\u003d\"en-US\"\u003e\n \n输出方格连通块的个数\n \u003c/div\u003e"}},{"title":"SAMPLE INPUT","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e\n1 1\n*\n3 3 \n@*@\n**@\n***\n1 5\n@**@*\n0 0\u003c/pre\u003e"}},{"title":"SAMPLE OUTPUT","value":{"format":"HTML","content":"\u003cpre class\u003d\"sio\"\u003e\n0\n2\n2\n\u003c/pre\u003e"}}]}