_==0 "exec" "gawk" "-f" "$0"
function f(n, m,	h,i,j,k) {
	if (m=="0") return 1
	if (n=="0") return 0
	for (j=1;j<=4;j++) {
		k=j!=4?j:0
		for (i=1;i<=9;i++) h[k i]=i^j%10
	}
	return h[m%4 n]
}
NR==1{ n=substr($0,length($0),1) }
NR==2{ m=substr($0,length($0)-1,2) }
END{ print f(n,m) }