"use strict";
    
const main = arg => {
    arg = arg.trim().split("\n");
    const a = parseInt(arg[0].split(" ")[0]);
    const b = parseInt(arg[0].split(" ")[1]);
    
    if(a < 0 && b >= 0) {
        console.log("Zero");
        return;
    }
    
    if(a > 0 && b > 0) {
        console.log("Positive");
        return;
    }
    
    if((b - a) % 2 === 0) {
        console.log("Negative");
        return;
    }

    console.log("Positive");
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));