import std.stdio, std.string, std.conv;
import std.algorithm;

void main()
{
    for(string s_; (s_=readln().chomp()).length;)
    {
        auto ab = s_.split.map!(to!int)();
        immutable a=ab[0], b=ab[1];
        if(0<a) writeln("Positive");
        else if(a<=0 && 0<=b) writeln("Zero");
        else if(b<0 && (b-a)%2==0) writeln("Negative");
        else if(b<0 && (b-a)%2==1) writeln("Positive");
        else assert(false);
    }
}