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#include <iostream>

#define MAX 1000

using namespace std;

int main()
{

cin.sync_with_stdio(false);

int n;
int a, odd = MAX;
int sum = 0;

cin >> n;

for(int i=0; i<n; ++i)
{
    cin >> a;

    sum += a;

    if (a%2 == 1 && a<odd)
    {
        odd = a;
    }
}

if (sum%2 == 1)
{
    sum -= odd;
}

if (sum>0) 
  cout << sum << '\n';
else
  cout << "NIESTETY\n";

return 0;
}