**Problem Statement:**
Given the required input arguments, write an efficient algorithm to solve the **Power(x, n)** problem. Implement the required logic as specified by standard definitions for this classic algorithmic challenge.
**Hint / Expected Approach:**
Fast exponentiation (binary exponentiation)
**Edge Cases to Consider:**
- (1) n = 0 (return 1)
- (2) x = 0 (edge with n<0)
- (3) n = INT_MIN overflow