import std.algorithm;
import std.stdio;

void main ()
{
	int a, b;
	while (readf (" %s %s", &a, &b) > 0)
	{
		if (a <= 0 && 0 <= b)
		{
			writeln ("Zero");
		}
		else if (a > 0)
		{
			writeln ("Positive");
		}
		else
		{
			b = min (b, 0);
			if ((b - a) & 1)
			{
				writeln ("Positive");
			}
			else
			{
				writeln ("Negative");
			}
		}
	}
}
