{"trustable":false,"prependHtml":"\u003cscript\u003e window.katexOptions \u003d { disable: true }; \u003c/script\u003e\n\u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {\n inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027], [\u0027$\u0027,\u0027$\u0027]],\n displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027], [\u0027$$\u0027,\u0027$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\" type\u003d\"text/javascript\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"\u003cscript type\u003d\u0027text/x-mathjax-config\u0027\u003eMathJax.Hub.Config({tex2jax: { inlineMath: [[\u0027$\u0027,\u0027$\u0027]] } }); \u003c/script\u003e\n\u003cscript type\u003d\u0027text/javascript\u0027 src\u003d\u0027https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\u0027\u003e\u003c/script\u003e\n\u003cscript type\u003d\u0027text/javascript\u0027\u003esetTimeout(function(){MathJax.Hub.Queue([\u0027Typeset\u0027, MathJax.Hub, \u0027left_view\u0027]);}, 2000);\u003c/script\u003e\n\u003cdiv class\u003d\"panel_content\"\u003e\n 一场突如其来的爆炸,摧毁了许多村子之间的通道。爆炸后,我们得知有些村子之间不能直接或间接相通了,但是也是不存在圈的,就是说不存在这样一条路,从某个村子出发通过一些村子又回到了最初的村子。\n \u003cbr\u003e我们希望你们写一个程序帮我们确定两个村子之间的最短路径,或者确定他们不能相通。\n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"输入由多个问题实例组成。对于每个实例,第一行包含三个整数n、m和c, 2\u003c\u003dn\u003c\u003d10000, 0\u003c\u003dm\u003c10000, 1\u003c\u003dc\u003c\u003d1000000。n代表村子编号的数量从1到n。m行,每一行有三个整数i, j和k,代表一个村子i和j之间的道路,与长度k。c代表询问的次数,接下来每行两个整数i, j,表示我们想知道村子i和j之间是否相通,相通的话最短路径是多少。"}},{"title":"Output","value":{"format":"HTML","content":"对于每个问题实例,每个查询对应一行。如果两城市之间没有路径,输出“Not connected”,否则输出两城市之间最短路径的长度"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cpre\u003e5 3 2\n1 3 2\n2 4 3\n5 2 3\n1 4\n4 5\u003c/pre\u003e"}},{"title":"Sample Output","value":{"format":"HTML","content":"\u003cpre\u003eNot connected\n6\n\n\n \n \u003ci style\u003d\"font-size:1px\"\u003e \u003c/i\u003e\u003c/pre\u003e"}},{"title":"Hint","value":{"format":"HTML","content":"\u003cpre\u003e\nHint\n\n注意scanf和cin\n \n \u003c/pre\u003e"}}]}