import std.stdio;

void main()

{

    auto X = "CONOUT$";

    //1

    writeln("Hello 1");

    auto original = stdout;         

    stdout.open(X, "w");

    writeln("Hello D 2");

    stdout = original;

    stdout.open(X, "w");

    original.open(X, "w");

    //5

    writeln("Hello D 5");

}