2. Fan-Out Wire

How do you plan to solve it?

module top_module(
    // Declare Inputs and outputs here
    input a, output y1,y2,y3
);
    // Module functionality here
    wire f1 = a;
    wire f2 = a;
    wire f3 = a;
    assign y1 = f1;
    assign y2 = f2;
    assign y3 = f3;

endmodule