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#include <iostream>
#include <sstream>
#include <fstream>
#include <string>
#include <vector>
#include <queue>
#include <algorithm>
#include <map>
#include <set>

using namespace std;

typedef long long LL;

#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define ABS(val) ((val) < 0 ? -(val) : (val))

#define FOR(x, b, e) for(int x = b; x <= (e); ++x)
#define FORD(x, b, e) for(int x = b; x >= (e); --x)
#define REP(x, n) for(int x = 0; x < (n); ++x)
#define VAR(v, n) __typeof(n) v = (n)
#define ALL(c) (c).begin(), (c).end()
#define SIZE(x) ((int)(x).size())
#define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define PB push_back
#define ST first
#define ND second
const int INF = 1e9 + 1000;

/* PA-2015 R1 */

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

	int sum = 0;
	int min_odd = INF;

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

		if (v & 1)
		{
			min_odd = MIN(min_odd, v);
		}
		sum += v;
	}

	int res = sum;
	if (sum & 1)
	{
		res -= min_odd;
	}

	if (res == 0)
	{
		printf("NIESTETY\n");	
	}
	else
	{
		printf("%d\n", res);
	}

	return 0;
}