3. Multiple Drivers

Drive a single output y from two different inputs a and b using two separate continuous assignments. Observe the result when a and b differ.

Requirements:

Module Name: top_module
Inputs: a, b (1-bit each)
Outputs: y (1-bit)

This problem is only for educational purposes to show what happens if multiple drivers drive the same wire. In real-world designs, multiple drivers on a single wire should be avoided because it causes conflicts (contention) in hardware.