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{"ops":[{"insert":"Miss Ural wants to buy colors for Holi, and that too, at the cheapest cost!\nThere are\u00a0N\u00a0shops selling colors near Ural's house, where the\u00a0i\u2032th\u00a0shop sells colors at rate of\u00a0Ri\u00a0for one unit. Also, i\u2032th\u00a0shop is located at a distance of\u00a0Di\u00a0kilometers from her house. Life was simple, but then petrol and fuel prices soared up. The current price of petrol to travel one kilometer is\u00a0K\nFind the minimum cost at which Miss Ural can buy one unit of color. she does not need to return back home.\n\nThe first line of input contains\u00a0T, number of test cases in a file."},{"attributes":{"list":"bullet"},"insert":"\n"},{"insert":"The next line contains two integers,\u00a0N\u00a0and\u00a0K, as described in the problem statement."},{"attributes":{"list":"bullet"},"insert":"\n"},{"insert":"The next line contains\u00a0N space separated integers, denoting\u00a0Di, i.e. distance of the shop."},{"attributes":{"list":"bullet"},"insert":"\n"},{"insert":"The next line contains\u00a0N space separated integers denoting\u00a0Ri, i.e. rate of the color."},{"attributes":{"list":"bullet"},"insert":"\n"},{"insert":"\nFor test case, output minimum cost to purchase\u00a01\u00a0unit of color.\n\n1\u2264T\u226410^5"},{"attributes":{"list":"bullet"},"insert":"\n"},{"insert":"1\u2264N\u226410^5"},{"attributes":{"list":"bullet"},"insert":"\n"},{"attributes":{"bold":true},"insert":"Sum of\u00a0N\u00a0over all\u00a0T in a test file does not exceed\u00a010^6."},{"attributes":{"list":"bullet"},"insert":"\n"},{"insert":"1\u2264Ri,K,Di\u226410^9"},{"attributes":{"list":"bullet"},"insert":"\n"},{"insert":"\n"}]}

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