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#include <iostream>
using namespace std;
int n, s;
short int temp, best = 1001;
int main()
{
    ios_base::sync_with_stdio(0);
    cin >> n;
    if (n == 1)
    {
		cin >> temp;
		if (temp % 2 == 1) cout << "NIESTETY" << endl;
		else cout << temp << endl;
		return 0;
    }
    for (int i = 0; i < n; ++i)
    {
        cin >> temp;
        if (temp < best && temp % 2 == 1) best = temp;
        s += temp;
    }
    if (s % 2 == 0) cout << s << endl;
    else cout << s - best << endl;
    return 0;
}