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#include <iostream>
#include <string>
#include <math.h>
using namespace std;

int main(string args[]){
	long suma = 0;
	int n;
	cin >> n;
	int minnp = 2147483647;
	int nnp = 0;

	short nom;
	for (int i = 0; i < n; i++){
		cin >> nom;
		if (nom % 2 == 0)
			suma += nom;
		else{
			suma += nom;
			nnp++;
			if (nom < minnp)
				minnp = nom;
		}
	}
	if (n == 1 && (suma % 2 == 1))
		cout << "NIESTETY" << endl;
	else
	{
		if (nnp % 2 == 1){
			suma = suma - minnp;
			cout << suma << endl;
		}
		else
		{
			cout << suma << endl;
		}
		
	}

	system("PAUSE");

	return 0;
}