import std.stdio;

void main(){
	auto cin = new Cin();
	
	auto ab = cin.line!long();
	
	if( ab[0] <= 0 && 0 <= ab[1] ){
		writeln("Zero");
	} else if( ab[1]<0 && (ab[1]-ab[0])%2==0 ){
		writeln("Negative");
	} else {
		writeln("Positive");
	}
	
	//sum.writeln();
}
auto solve(){
}
unittest{
	
}


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

class Cin
{
	T[] line( T = size_t , string token = " " )( size_t m = 1 ){
		T[] arr = [];
		foreach( i ; 0..m ){
			arr ~= this.read!T();
		}
		return arr;
	}
	T[][] rect( T = size_t , string token = " " )( size_t m = 1 ){
		T[][] arr = new T[][](m);
		foreach( i ; 0..m ){
			arr[i] = this.read!T(token);
		}
		return arr;
	}
	private T[] read( T = size_t )( string token = " " ){
		T[] arr;
		foreach( elm ; readln().chomp().split(token) ){
			arr ~= elm.to!T();
		}
		return arr;
	}
}