#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) begin(v),end(v)
template<typename A, typename B> inline bool chmax(A & a, const B & b) { if (a < b) { a = b; return true; } return false; }
template<typename A, typename B> inline bool chmin(A & a, const B & b) { if (a > b) { a = b; return true; } return false; }
using ll = long long;
using pii = pair<int, int>;
constexpr ll INF = 1ll<<30;
constexpr ll longINF = 1ll<<60;
constexpr ll MOD = 1000000007;
constexpr bool debug = false;
//---------------------------------//

int main() {
	ll N;
	cin >> N;
	FOR(a, 1, N) {
		ll b = N - a;
		auto pcnt = [](ll x) {
			int res = 0;
			while (x > 0) res += x & 1, x >>= 1;
			return res;
		};
		if (pcnt(a) == 1 || pcnt(b) == 1) continue;
		cout << a << " " << b << endl;
		return 0;
	}
	puts("-1");
}