Easy Summation

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Here we can say , The easy problem in this contest ,because you just only print the sum of the first $2*N$ Natural Numbers According to the problem , you are given $N$ and you have to print the sum of first $2*N$ Natural Numbers. ### Input - First line will contain $T$, number of testcases. Then the testcases follow. - Each testcase contains of a single line of input, The size of the array $N$.

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solution.cppC++17

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