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#ifdef _MSC_VER
  #ifndef __GNUC__
    #pragma warning(disable: 4996)
  #endif
  #define main main0
#endif
#include <iostream>
using namespace std;

int main() {
  ios_base::sync_with_stdio(0);
  int n, current, minimum = 1000000, result = 0;

  cin >> n;
  for(int i = 0; i < n; ++i) {
    cin >> current;
    result += current;
    if((current & 1) == 1 && minimum > current)
      minimum = current;
  }
  if((result & 1) == 1)
    result -= minimum;

  if(result > 0)
    cout << result << endl;
  else
    cout << "NIESTETY" << endl;

  return 0;
}