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#include <iostream>

using namespace std;

int main() {
ios_base::sync_with_stdio(0);

int a;
int n;
int sum = 0;
int min_odd = 1000;
bool spare_odd = false;

cin >> n;

while(n--)
{
    cin >> a;
    sum += a;
    if(a%2 != 0)
    {
        if(!spare_odd)
            spare_odd = true;
        else
            spare_odd = false;
        if(a < min_odd)
            min_odd = a;
    }
}

if(spare_odd)
    sum -= min_odd;
if(sum == 0)
    cout << "NIESTETY" << endl;
else
    cout << sum << endl;

return 0;
}