1.
Let f:[0,3]Af: [0,3] \to A be defined by f(x)=2x315x2+36x+7f(x) = 2x^3 - 15x^2 + 36x + 7 and g:[0,)Bg: [0, \infty) \to B be defined by g(x)=x2025x2025+1g(x) = \frac{x^{2025}}{x^{2025} + 1}. If both the functions are onto and S={xZ:xA or xB}S = \{x \in \mathbb{Z} : x \in A \text{ or } x \in B\}, then n(S)n(S) is equal to: