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\u003c/style\u003e","sections":[{"title":"","value":{"format":"HTML","content":"\u003cp\u003eDemetrio loves drinking beer in a bar called \"Beer Joint\" and eating Pizza in a bar called \"Pizza Joint\". Why does he love these bars?\u003c/p\u003e\n\u003cul\u003e\n \u003cli\u003eAt Beer Joint they have a beer called \"queso cáscara negra\".\u003c/li\u003e\n \u003cli\u003eAt Pizza Joint they have a fancy way of cutting the pizza. They choose $$$n$$$ random points in the border of the pizza and they draw lines connecting every two of them (so $$$\\binom{n}{2}$$$ lines). The fact that they are random implies that there are not three cuts that pass through the same point.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eThe other day Demetrio and his friend Cuco went to Pizza joint. When the pizza arrived, Cuco counted one by one the number of portions of the pizza.\u003c/p\u003e\n\u003cp\u003eFor example look at the picture:\u003c/p\u003e\n\u003ccenter\u003e\u003cimg class\u003d\"tex-graphics\" src\u003d\"CDN_BASE_URL/0e62b93d91bcd290f216e72113dc648e?v\u003d1666923761\" style\u003d\"max-width: 100.0%;max-height: 100.0%;\"\u003e\n\u003c/center\u003e\n\u003cp\u003eCan you print the number that Cuco counted?\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003eOne integer $$$0\\leq n\\leq 62$$$, the number of random points that Pizza Joint chose on the perimeter of the pizza.\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003eOne integer, the total number of portions of pizza.\u003c/p\u003e"}},{"title":"Sample 1","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\u003e1\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e1\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}},{"title":"Sample 2","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\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e2\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}},{"title":"Sample 3","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\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e8\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}