2. Fan-Out Wire

How do you plan to solve it?

module top_module(
    input a,
    output y1, y2, y3
);

// Internal wires
wire w1, w2, w3;

// Assignments
assign w1 = a;
assign w2 = a;
assign w3 = a;

assign y1 = w1;
assign y2 = w2;
assign y3 = w3;

endmodule