local ffi = require 'ffi'
local C = ffi.C

ffi.cdef [[
long atol(const char *);
]]

print((function (f, n)
	local h,m,t = {},n/2LL,3LL
	for i=0,59 do if 2LL^i>=n then break end h[tostring(2LL^i)]=0 end
	while t<=m do if h[tostring(n-t)]==nil then break end t=t+2LL end
	return t<=m and f(t,n-t) or -1
end)(function (l, r)
	return tostring(l):sub(1,-3).." "..tostring(r):sub(1,-3)
end, C.atol(io.stdin:read("*l"))))