3. Multiple Drivers

How do you plan to solve it?

/*Write your code here*/
module top_module(input a, input b, output reg y);
always @(a or b) begin
    if (a==0 && b==0) 
        y=0;
    
    else if (a==1 && b==1) 
        y=1;
    
    else 
      y=1'bx; 
    
end
endmodule