#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

int main() {
	int n;
	cin >> n;
	vector<int> a(n);
	for(int& x : a) cin >> x;
	auto m1 = *min_element(a.begin(), a.end());
	// NOTE: This removes all copies of m1, not just one.
	auto end = remove(a.begin(), a.end(), m1);
	auto m2  = *min_element(a.begin(), end);
	cout << m1 + m2 << endl;
}