print((function (n, m)
	if m=="0" then return 1 end m=tonumber(m)
	if n=="0" then return 0 end n=tonumber(n)
	local h={}
	for j=1,4 do
		local k=j~=4 and j or 0 h[k]={}	for i=1,9 do h[k][i]=i^j%10 end
	end
	return h[m%4][n]
end)(io.stdin:read("*l"):sub(-1), io.stdin:read("*l"):sub(-2)))