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#include<iostream>
#include<climits>

using namespace std;

int main() {
	unsigned long iloscBanknotow, banknot;
	unsigned long minNieparzysty = ULONG_MAX, suma = 0;
	cin >> iloscBanknotow;
	
	for (int i = 0; i < iloscBanknotow; i++) {
		cin >> banknot;
		suma+=banknot;
		if(banknot%2) {
			if(minNieparzysty > banknot) {
				minNieparzysty = banknot;
			}
		}
	}
	
	//cout << "suma=" << suma << ", minNieparzysty=" << minNieparzysty << endl;
	
	if(suma%2) {
	  if(minNieparzysty != ULONG_MAX) {
		if(suma > minNieparzysty) {
		  cout << suma - minNieparzysty;
		} else {
		  cout << "NIESTETY\n";
		}
	  } else {
		cout << "NIESTETY\n";
	  }
	} else if(suma > 0) {
		cout << suma;
	} else {
		cout << "NIESTETY\n";
	}
	return 0;
}