program AGC002A
    implicit none
    integer(8)::a,b

    read(5,*)a,b

    if(a<=0 .and. b>=0)then
        print'(A)',"Zero"
    else if(a>0)then
        print'(A)',"Positive"
    else
        if(mod(min(0,b)-a+1,2)==1)then
            print'(A)',"Negative"
        else
            print'(A)',"Positive"
        end if
    end if
    
end program AGC002A