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#include <bits/stdc++.h>
using namespace std;
#define e1 first
#define e2 second
#define pb push_back
#define mp make_pair
#define boost ios_base::sync_with_stdio(false)
#define eb emplace_back
#define OUT(x) {cout << x; exit(0); }
typedef long long int ll;
typedef unsigned long long ull;
typedef pair <int, int> PII;
typedef unsigned int ui;
const int mod = 1e9+7;
const int inf = 1e9+9;
const ll MOD = 1e9+696969;
const ll INF = 1e18+3;

int wyn = -inf, n, sum = 0;
int t[1000100];
int main()
{
	scanf("%d", &n);
	for (int i=1; i<=n; ++i) scanf("%d", &t[i]), sum += t[i];
	if (n == 1 && (sum & 1)) OUT("NIESTETY");
	if (!(sum & 1)) wyn = max(wyn, sum);
	for (int i=1; i<=n; ++i)
	{
		int tmp = sum;
		tmp -= t[i];
		if (!(tmp & 1)) wyn = max(wyn, tmp);
	}
	if (wyn != -inf) printf("%d", wyn);
	else printf("NIESTETY");
}