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Coprime 6-tuples

CodeChefRating 2940Open on judge ↗

There are N integers X1, X2, ..., XN. Let's define Yi,j = Xi × Xj mod 359999. How many integer 6-tuples (a, b, c, d, e, f) are there such that: - 1 ≤ a, b, c, d, e, f ≤ N - gcd(Ya, b, Yc, d, Ye, f) = 1 We define gcd(0, 0) = 0. Input The first line of input contains an integer T denoting the number of test cases. The description of T test cases follows. The first line of each test case cont

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solution.cppC++17

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