process.stdin.resume();
process.stdin.setEncoding('utf8');

var lines = [];
var reader = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});
reader.on('line', (line) => {
  lines.push(line);
});
reader.on('close', () => {
    const [a,b] = lines[0].split(" ").map(v=>v-0);
    if(a*b<=0) console.log("Zero");
    else if(b<0){
        console.log((b-a+1)%2===0?"Positive":"Negative");
    }else{
        console.log("Positive");
    }
    
});
