static internal int part1()
{
var pr1 = new Pr(0);
var done = false;
do
{
done = pr1.Step();
}while (!done);
return(pr1.count);
}
static void Main(string[] args)
{
var pr1 = new Pr(0);
var pr2 = new Pr(1);
pr1.p = pr2;
pr2.p = pr1;
do
{
pr1.Step();
pr2.Step();
}while (!pr1.IsWaiting || !pr2.IsWaiting);
Console.WriteLine(pr2.SentValues);
Console.ReadKey();
}