import std.stdio;

template addFunc(T) {
    T add(T x, T y)
    {
        return x + y;
    }

    T times(T x, T y)
    {
        return x * y;
    }

    T minus(T x, T y)
    {
        return x - y;
    }

}

void main()
{

    writeln(addFunc!int.add(5, 5));
    writeln(addFunc!int.times(2, 4));
    writeln(addFunc!int.minus(3, 5));
    writef("Hello, World!\n");
}