{"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需要的时候,就把一个个大小差一圈的筐叠上去,使得从上往下看时,边筐花色交错。这个工作现在要让计算机来完成,得看你的了。\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"输入是一个个的三元组,分别是,外筐尺寸n(n为满足0\u0026lt;n\u0026lt;80的奇整数),中心花色字符,外筐花色字符,后二者都为ASCII可见字符;"}},{"title":"Output","value":{"format":"HTML","content":"输出叠在一起的筐图案,中心花色与外筐花色字符从内层起交错相叠,多筐相叠时,最外筐的角总是被打磨掉。叠筐与叠筐之间应有一行间隔。"}},{"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\u003e11 B A\r\n5 @ W\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e AAAAAAAAA \r\nABBBBBBBBBA\r\nABAAAAAAABA\r\nABABBBBBABA\r\nABABAAABABA\r\nABABABABABA\r\nABABAAABABA\r\nABABBBBBABA\r\nABAAAAAAABA\r\nABBBBBBBBBA\r\n AAAAAAAAA \r\n\r\n @@@ \r\n@WWW@\r\n@W@W@\r\n@WWW@\r\n @@@ \r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}