A New Restaurant

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Chef opens a new restaurant in the city of Byteland which can be represented in x-y plane. Chef’s restaurant is at point R(0,0). All the (x,y) points in Byteland where x and y both are integers represent a building. One fine day, Chef wants to know the number of buildings which are exactly D unit away from chef restaurant. Input - First line contains a number T, number of test cases. Each of t

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solution.cppC++17

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