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#include <iostream>

using namespace std;

int main()
{
    cout.sync_with_stdio(false);
    
    long long sum = 0;
    long long min = -1;
    long long n, m;
    
    cin >> n;
    for(int i = 0; i < n; i++) {
        cin >> m;
        sum = sum + m;
        if(m % 2 != 0 && (min == -1 || min > m))
            min = m;
    }
    
    if(sum % 2 != 0)
        sum -= min;
    
    if(sum == 0)
        cout << "NIESTETY" << endl;
    else
        cout << sum << endl;
    
    return 0;
}