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#include <cstdio>
#include <iostream>
#include <algorithm>
#include <string>
#include <sstream>
#include <vector>
#include <list>
#include <set>
#include <map>
using namespace std;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef pair<int, int> PI;
typedef vector<PI> VPI;
typedef long long LL;
typedef vector<LL> VLL;
#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 FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define ALL(c) (c).begin(), (c).end()
#define SIZE(x) ((int)(x).size())
#define PB push_back
#define MP make_pair
#define ST first
#define ND second
const int INF = 1000000001;
const double EPS = 10e-9;

int main()
{
	int n, b, sum = 0, least = INF;

	scanf("%d", &n);

	REP(x, n)
	{
		scanf("%d", &b);
		sum += b;
		if (b % 2 == 1 && b < least)
		{
			least = b;
		}
	}

	if (sum % 2 == 0)
	{
		printf("%d\n", sum);
	}
	else
	{
		sum -= least;
		if (sum > 0)
		{
			printf("%d\n", sum);
		}
		else
		{
			printf("NIESTETY\n");
		}
	}
	return 0;
}