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#include<iostream>
using namespace std;

int main()
{
    int n;
    cin >> n;

    int m = 10000,a,p = 0;
    long long sum = 0;
    for( int i = 0 ; i < n ; i++ )
    {
        cin >> a;

        if( a % 2 == 1 ){
            p++;
            m = min( a , m );
        }
        sum += a;
    }
    if( p % 2 == 1 ) sum -= m;
    if( sum == 0 ) cout << "NIESTETY";
    else cout << sum;
}