Find The Pair

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Two positive integers $X$ and $Y$ are given. Find the number of pairs of positive integers $(P,Q)$ such that $1≤P≤X, 1≤Q≤Y$ for every $P+Q$ is even. ###Input: - The first line of the input contains a single integer $T$ denoting the number of test cases. - The first and only line of each test case contains two space-separated integers $X$ and $Y$. ###Output: For each test case, print a s

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solution.cppC++17

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