#include <bits/stdc++.h>


using namespace std;

int main()
{
    char str1[11],str2[11];
    while(~scanf("%s%s",str1,str2))
    {
        if((str1[0] == '-' && str2[0] != '-') || (str2[0] == '-' && str1[0] != '-'))
        {
            printf("Zero\n");
        }
        else if(str1[0] != '-' && str2[0] != '-')
        {
            printf("Positive\n");
        }
        else if(str1[0] == '-' && str2[0] == '-')
        {
            int len1 = strlen(str1);
            int len2 = strlen(str2);
            int a = str1[len1-1] - '0';
            int b = str2[len2-1] - '0';
            if((a-b) % 2 == 0)
            {
                printf("Negative\n");
            }
            else
            {
                printf("Positive\n");
            }
        }
    }
    return 0;
}
