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#include <iostream>
#include <cstdio>
#include <ctime>
#include <cstdlib>
#include <algorithm>
#include <cmath>
#include <vector>
#include <map>
#include <queue>
#include <stack>
#include <set>
#include <utility>
#include <fstream>
#include <cassert>

#define INF 999999999999999999LL
#define MOD 1000000007
#define MAX 1010
#define ALL 50
#define DEBUG false

using namespace std;

int main()
{
	int n,x;
	scanf("%d", &n);

	int res = 0, minOdd = MAX;
	for (int i = 0; i < n; ++i) {
		scanf("%d", &x);

		if ((x % 2 == 1) && minOdd > x) {
			minOdd = x;
		}

		res += x;
	}

	if (res % 2 == 1)
		res -= minOdd;

	if (res > 0) {
		printf("%d", res);
	} else {
		printf("NIESTETY");
	}
	return 0;
}