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#include <iostream>

const int oo = 2100000000;
void init()
{
  std::ios_base::sync_with_stdio(false);
}

int n, // 1..1 000 000
    a[1000002]; // 1 <= a_i <= 1000

void readData()
{
  std::cin >> n;
  for (int i = 0; i < n; i++)
    std::cin >> a[i];
}

int minimalOdd, // 1..1000
    sum; // 1..1 000 000 000

void calculate()
{
  sum = 0;
  for (int i = 0; i < n; i++)
    sum += a[i];

  minimalOdd = oo;
  for (int i = 0; i < n; i++)
    if ((a[i] % 2 == 1) && (a[i] < minimalOdd))
      minimalOdd = a[i];
}

int main()
{
  init();
  readData();
  calculate();

  if (sum % 2 == 0)
    std::cout << sum << "\n";
  else if (n == 1)
    std::cout << "NIESTETY\n";
  else
    std::cout << sum - minimalOdd << "\n";
}