_==0 "exec" "gawk" "-f" "$0"
function f(n, m) {
	if (m=="0") return 1
	if (n=="0") return 0
	m=m%4==0?4:m%4
	return n^m%10
}
NR==1{ n=substr($0,length($0),1) }
NR==2{ m=substr($0,length($0)-1,2) }
END{ print f(n,m) }