{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cp\u003e\u003cimg border\u003d\"0\" src\u003d\"http://www.lydsy.com/JudgeOnline/images/2208.jpg\" alt\u003d\"\"\u003e\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003e输入数据第一行是图顶点的数量,一个正整数N。 接下来N行,每行N个字符。第i行第j列的1表示顶点i到j有边,0则表示无边。\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003e输出一行一个整数,表示该图的连通数。\u003c/p\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cspan class\u003dsampledata\u003e3 \n010 \n001 \n100 \u003c/span\u003e\u003c/div\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cspan class\u003dsampledata\u003e9\u003c/span\u003e\u003c/div\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\u003cp\u003e\u003c/p\u003e\n\u003cp\u003e对于100%的数据,N不超过2000。\u003c/p\u003e\n\u003cp\u003e\u003c/p\u003e"}}]}