{"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\nHDU ACM training team members often discuss the problems they encounter while training in the summer. Whenever they face a problem they can\u0027t solve on their own, they sit around a circular table to exchange ideas. After the discussion, there is usually no problem that cannot be solved. This is a unique round table meeting of the HDU ACM training team. One day, you can come and experience it too :). During one of the discussions, Eddy came up with a very strange idea. If they exchange seats with their adjacent ACM teammates every minute, how much time would it take to get the seating arrangement completely reversed? (i.e. for each teammate, the one who was originally on their left is now on their right, and the one who was originally on their right is now on their left.) Of course, this did not stump the other clever teammates, and they quickly solved this strange problem. Do you know how they solved it?\n\u003cbr\u003e\n\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"For a given number N (1\u0026lt;\u003dN\u0026lt;\u003d32767), representing the number of people, find out how much time it would take to get the seating arrangement completely reversed, i.e. for each person, the one who was originally on their left is now on their right, and the one who was originally on their right is now on their left.\n\u003cbr\u003e"}},{"title":"Output","value":{"format":"HTML","content":"Output one line for each data set, representing the time needed (in minutes).\n\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\u003e4\r\n5\r\n6\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e2\r\n4\r\n6\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e"}}]}