{"raw_statement":[{"iden":"statement","content":"Motasem wants to cook n steaks (the steak consists of two faces) for his friends, and each face of the steak needs to be cooked for 5 minutes. Unfortunately, his pans can only fit 2 steaks at a time, and he only has k pans. If Motasem is cooking his steaks optimally, what is the minimum number of minutes he needs to cook all n steaks?\n\nA single line containing two space separated integers $n, k$ ($1 <= n, k <= 10^9$) represent the number of steaks and pans respectively.\n\nA single integer represents the minimum time needed to cook all steaks \n\n"},{"iden":"input","content":"A single line containing two space separated integers $n, k$ ($1 <= n, k <= 10^9$) represent the number of steaks and pans respectively."},{"iden":"output","content":"A single integer represents the minimum time needed to cook all steaks "}],"translated_statement":null,"sample_group":[],"show_order":[],"formal_statement":"**Definitions**  \nLet $ V \\in \\mathbb{Z} $ be the number of vertices of a regular polygon, with $ 3 \\leq V \\leq 359 $.  \nLet $ S \\in \\mathbb{R} $ be the side length of the polygon, with $ 1 \\leq S \\leq 10^9 $.  \nLet $ R $ be the radius of the circumscribed circle.\n\n**Constraints**  \n1. $ 3 \\leq V \\leq 359 $  \n2. $ 1 \\leq S \\leq 10^9 $\n\n**Objective**  \nCompute the area $ A $ of the circumscribed circle:  \n$$\nA = \\pi R^2, \\quad \\text{where} \\quad R = \\frac{S}{2 \\sin\\left(\\frac{\\pi}{V}\\right)}\n$$  \nThus,  \n$$\nA = \\pi \\left( \\frac{S}{2 \\sin\\left(\\frac{\\pi}{V}\\right)} \\right)^2\n$$","simple_statement":"Given a regular polygon with V vertices and side length S, find the area of its circumscribed circle.","has_page_source":false}