Combination of pair

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Chef has N pairs of two symbols /(forward slash)and \ (backward slash). Chef is a curious person. He wants to know that how many sets of pairs can be created such that 0 or more pairs can be enclosed in number of pairs. ###Input: - First line will contain $T$, number of testcases. Then the testcases follow. - Each testcase contains of a single line of input, $N$, no. of pairs of symbols,

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solution.cppC++17

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