Magic Number

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Riyaz challenged Vikas to find a number called MAGIC NUMBER. In his view magic number is defined as the last digit of the value $a^{b}$ a and b both are not 0. You have to find the MAGIC NUMBER. ### Input - First line will contain $T$, number of testcases. Then the testcases follow. - Each testcase contains of a single line of input, two integers $a, b$. ### Output For each testcase, output in a

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solution.cppC++17

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