Chef and Handshakes

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At the annual meeting of Board of Directors of Byte Land Municipal Corporation, every one starts shaking hands with everyone else in the room. Given the fact that any two persons shake hand exactly once, Can you Help our Chef to find the total count of handshakes? Input The first line contains the number of test cases T, T lines follow. Each line then contains an integer N, the total number of

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solution.cppC++17

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