Cosine Partition Function

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Chef Ciel is participating an arithmetic contest now. Why? Because of the top prize for the contest, limited edition chopsticks. She must calculate the values f(M, N, X) of function named cosine partition function to be the first place. The cosine partition function f(M, N, X) is defined by Examples are following: f(1, 3, X) = cos(3X/3) = cos(X) f(2, 3, X) = cos(0/3) cos(3X/3) + cos(X/3) cos(2

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solution.cppC++17

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