{"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 According to a research, VIM users tend to have shorter fingers, compared with Emacs users.\u003cbr\u003e Hence they prefer problems short, too. Here is a short one:\u003cbr\u003e Given n (1 \u0026lt;\u003d n \u0026lt;\u003d 10\u003csup\u003e18\u003c/sup\u003e), You should solve for \u003cbr\u003e\u003ccenter\u003eg(g(g(n))) mod 10\u003csup\u003e9\u003c/sup\u003e + 7\u003c/center\u003e\u003cbr\u003e where\u003cbr\u003e\u003ccenter\u003eg(n) \u003d 3g(n - 1) + g(n - 2)\u003c/center\u003e\u003cbr\u003e\u003ccenter\u003eg(1) \u003d 1\u003c/center\u003e\u003cbr\u003e\u003ccenter\u003eg(0) \u003d 0\u003c/center\u003e\u003cbr\u003e\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":" There are several test cases. For each test case there is an integer n in a single line.\u003cbr\u003e Please process until EOF (End Of File).\u003cbr\u003e"}},{"title":"Output","value":{"format":"HTML","content":" For each test case, please print a single line with a integer, the corresponding answer to this case.\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\u003e0\r\n1\r\n2\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e0\r\n1\r\n42837\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}