function Main(input) {
	input = input.trim().split(" ").map((a)=>Number(a));
  var A = input[0];
  var B = input[1];
  if((B > 0 && B - A > B) || A == 0 || B == 0){
     console.log("Zero");
  }else if(A > 0 && B > 0){
     console.log("Positive");
  }else{
       if((B - A) % 2 == 1){
          console.log("Positive");
       }else{
          console.log("Negative");
       }
	}
}

Main(require("fs").readFileSync("/dev/stdin", "utf8"));
