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#include <iostream>
#include <algorithm>

using namespace std;


int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  
  int n;
  cin >> n;
  int minOdd = 2000000000;
  int sum = 0;
  
  for(int i = 0; i < n; ++i) {
    int a;
    cin >> a;
    
    sum += a;
    
    if(a & 1) minOdd = min(minOdd, a);
  }
  
  if(sum & 1) sum -= minOdd;
  
  if(sum > 0) cout << sum << '\n';
  else        cout << "NIESTETY\n";
  
  return 0;
}