const inf = Number.MAX_SAFE_INTEGER;
function Main(input){
	var mem = input.split(" ").map(Number);
	var n = Math.abs(mem[0]-mem[1])+1;
	var a=0,b=0;
	if(mem[0]>0) a = 1;
	else if(mem[0]<0) a= -1;
	if(mem[1]>0) b = 1;
	else if(mem[1]<0) b= -1;
	if(a==0||b==0||a!=b) console.log("Zero");
	else{
		if(a==-1&&b==-1&&n%2==1) console.log("Negative");
		else console.log("Positive");
	}
}Main(require("fs").readFileSync("/dev/stdin", "utf8").trim());