Even Sum

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You are given a number $N$.You want to find the sum of the first $N$ Even Number. ### Input - First line will contain $T$, number of testcases. - Each testcase contains of a single line of input, integer $N$. ### Output For each $N$, print the sum of first Even Number. ### Constraints - $1 \leq T \leq 20$ - $2 \leq M \leq 40$ ### Subtasks - 30 points : $1 \leq R \leq 10000$ - 70 points : $1 \l

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solution.cppC++17

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