# It's gonna be a good year.

Suppose $$x^2= -y \mod{625}$$ has integer solutions for $$x$$ where $$y > 0$$. Let the sum of all possible $$y \mod{10}$$ be $$A$$. Let the sum of the first 40 solutions for $$y$$ (in order from least to greatest) be $$B$$. Let the maximum number of possible solutions of $$x$$ for a specified $$y$$ be $$C$$.

Find $$A+B+C-7$$.

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