{"trustable":true,"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":"\u003cdiv class\u003d\"panel_content\"\u003e一个规则的实心十二面体,它的 20个顶点标出世界著名的20个城市,你从一个城市出发经过每个城市刚好一次后回到出发的城市。 \u003cbr\u003e\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"前20行的第i行有3个数,表示与第i个城市相邻的3个城市.第20行以后每行有1个数m,m\u0026lt;\u003d20,m\u0026gt;\u003d1.m\u003d0退出.\u003cbr\u003e"}},{"title":"Output","value":{"format":"HTML","content":"输出从第m个城市出发经过每个城市1次又回到m的所有路线,如有多条路线,按字典序输出,每行1条路线.每行首先输出是第几条路线.然后个一个: 后列出经过的城市.参看Sample output\u003cbr\u003e"}},{"title":"Sample","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e2 5 20\r\n1 3 12\r\n2 4 10\r\n3 5 8\r\n1 4 6\r\n5 7 19\r\n6 8 17\r\n4 7 9\r\n8 10 16\r\n3 9 11\r\n10 12 15\r\n2 11 13\r\n12 14 20\r\n13 15 18\r\n11 14 16\r\n9 15 17\r\n7 16 18\r\n14 17 19\r\n6 18 20\r\n1 13 19\r\n5\r\n0\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e1: 5 1 2 3 4 8 7 17 18 14 15 16 9 10 11 12 13 20 19 6 5\r\n2: 5 1 2 3 4 8 9 10 11 12 13 20 19 18 14 15 16 17 7 6 5\r\n3: 5 1 2 3 10 9 16 17 18 14 15 11 12 13 20 19 6 7 8 4 5\r\n4: 5 1 2 3 10 11 12 13 20 19 6 7 17 18 14 15 16 9 8 4 5\r\n5: 5 1 2 12 11 10 3 4 8 9 16 15 14 13 20 19 18 17 7 6 5\r\n6: 5 1 2 12 11 15 14 13 20 19 18 17 16 9 10 3 4 8 7 6 5\r\n7: 5 1 2 12 11 15 16 9 10 3 4 8 7 17 18 14 13 20 19 6 5\r\n8: 5 1 2 12 11 15 16 17 18 14 13 20 19 6 7 8 9 10 3 4 5\r\n9: 5 1 2 12 13 20 19 6 7 8 9 16 17 18 14 15 11 10 3 4 5\r\n10: 5 1 2 12 13 20 19 18 14 15 11 10 3 4 8 9 16 17 7 6 5\r\n11: 5 1 20 13 12 2 3 4 8 7 17 16 9 10 11 15 14 18 19 6 5\r\n12: 5 1 20 13 12 2 3 10 11 15 14 18 19 6 7 17 16 9 8 4 5\r\n13: 5 1 20 13 14 15 11 12 2 3 10 9 16 17 18 19 6 7 8 4 5\r\n14: 5 1 20 13 14 15 16 9 10 11 12 2 3 4 8 7 17 18 19 6 5\r\n15: 5 1 20 13 14 15 16 17 18 19 6 7 8 9 10 11 12 2 3 4 5\r\n16: 5 1 20 13 14 18 19 6 7 17 16 15 11 12 2 3 10 9 8 4 5\r\n17: 5 1 20 19 6 7 8 9 10 11 15 16 17 18 14 13 12 2 3 4 5\r\n18: 5 1 20 19 6 7 17 18 14 13 12 2 3 10 11 15 16 9 8 4 5\r\n19: 5 1 20 19 18 14 13 12 2 3 4 8 9 10 11 15 16 17 7 6 5\r\n20: 5 1 20 19 18 17 16 9 10 11 15 14 13 12 2 3 4 8 7 6 5\r\n21: 5 4 3 2 1 20 13 12 11 10 9 8 7 17 16 15 14 18 19 6 5\r\n22: 5 4 3 2 1 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5\r\n23: 5 4 3 2 12 11 10 9 8 7 6 19 18 17 16 15 14 13 20 1 5\r\n24: 5 4 3 2 12 13 14 18 17 16 15 11 10 9 8 7 6 19 20 1 5\r\n25: 5 4 3 10 9 8 7 6 19 20 13 14 18 17 16 15 11 12 2 1 5\r\n26: 5 4 3 10 9 8 7 17 16 15 11 12 2 1 20 13 14 18 19 6 5\r\n27: 5 4 3 10 11 12 2 1 20 13 14 15 16 9 8 7 17 18 19 6 5\r\n28: 5 4 3 10 11 15 14 13 12 2 1 20 19 18 17 16 9 8 7 6 5\r\n29: 5 4 3 10 11 15 14 18 17 16 9 8 7 6 19 20 13 12 2 1 5\r\n30: 5 4 3 10 11 15 16 9 8 7 17 18 14 13 12 2 1 20 19 6 5\r\n31: 5 4 8 7 6 19 18 17 16 9 10 3 2 12 11 15 14 13 20 1 5\r\n32: 5 4 8 7 6 19 20 13 12 11 15 14 18 17 16 9 10 3 2 1 5\r\n33: 5 4 8 7 17 16 9 10 3 2 1 20 13 12 11 15 14 18 19 6 5\r\n34: 5 4 8 7 17 18 14 13 12 11 15 16 9 10 3 2 1 20 19 6 5\r\n35: 5 4 8 9 10 3 2 1 20 19 18 14 13 12 11 15 16 17 7 6 5\r\n36: 5 4 8 9 10 3 2 12 11 15 16 17 7 6 19 18 14 13 20 1 5\r\n37: 5 4 8 9 16 15 11 10 3 2 12 13 14 18 17 7 6 19 20 1 5\r\n38: 5 4 8 9 16 15 14 13 12 11 10 3 2 1 20 19 18 17 7 6 5\r\n39: 5 4 8 9 16 15 14 18 17 7 6 19 20 13 12 11 10 3 2 1 5\r\n40: 5 4 8 9 16 17 7 6 19 18 14 15 11 10 3 2 12 13 20 1 5\r\n41: 5 6 7 8 4 3 2 12 13 14 15 11 10 9 16 17 18 19 20 1 5\r\n42: 5 6 7 8 4 3 10 9 16 17 18 19 20 13 14 15 11 12 2 1 5\r\n43: 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5\r\n44: 5 6 7 8 9 16 17 18 19 20 1 2 12 13 14 15 11 10 3 4 5\r\n45: 5 6 7 17 16 9 8 4 3 10 11 15 14 18 19 20 13 12 2 1 5\r\n46: 5 6 7 17 16 15 11 10 9 8 4 3 2 12 13 14 18 19 20 1 5\r\n47: 5 6 7 17 16 15 11 12 13 14 18 19 20 1 2 3 10 9 8 4 5\r\n48: 5 6 7 17 16 15 14 18 19 20 13 12 11 10 9 8 4 3 2 1 5\r\n49: 5 6 7 17 18 19 20 1 2 3 10 11 12 13 14 15 16 9 8 4 5\r\n50: 5 6 7 17 18 19 20 13 14 15 16 9 8 4 3 10 11 12 2 1 5\r\n51: 5 6 19 18 14 13 20 1 2 12 11 15 16 17 7 8 9 10 3 4 5\r\n52: 5 6 19 18 14 15 11 10 9 16 17 7 8 4 3 2 12 13 20 1 5\r\n53: 5 6 19 18 14 15 11 12 13 20 1 2 3 10 9 16 17 7 8 4 5\r\n54: 5 6 19 18 14 15 16 17 7 8 9 10 11 12 13 20 1 2 3 4 5\r\n55: 5 6 19 18 17 7 8 4 3 2 12 11 10 9 16 15 14 13 20 1 5\r\n56: 5 6 19 18 17 7 8 9 16 15 14 13 20 1 2 12 11 10 3 4 5\r\n57: 5 6 19 20 1 2 3 10 9 16 15 11 12 13 14 18 17 7 8 4 5\r\n58: 5 6 19 20 1 2 12 13 14 18 17 7 8 9 16 15 11 10 3 4 5\r\n59: 5 6 19 20 13 12 11 10 9 16 15 14 18 17 7 8 4 3 2 1 5\r\n60: 5 6 19 20 13 14 18 17 7 8 4 3 10 9 16 15 11 12 2 1 5\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}