#include <iostream>
#include <vector>
#include <cmath>

using namespace std;

int main() {
	int n; cin >> n;
	vector<int> a(n);
	for (int i = 0; i < n; ++i) cin >> a[i];
	for (int i = 0; i < n; ++i) {
		for (int j = i + 1; j < n; ++j) {
			if (abs(a[i] - a[j]) % (n - 1) == 0) {
				cout << a[i] << " " << a[j] << endl;
				return 0;
			}
		}
	}

	return 0;
}
