io.write((function (fh, b, c)
	local s,j,A,a = fh:read("*l"),b("A"),b("A"),{}
	for i=1,#s do j=j+1 a[i]=c(A+(b(s:sub(i,i))-j)%26) end a[#s+1]="\n"
	return unpack(a)
end)(io.stdin, string.byte, string.char))