#include <cstdio>
#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <complex>
#include <iterator>
#include <set>
#include <bitset>
#include <map>
#include <stack>
#include <list>
#include <queue>
#include <deque>
using namespace std;
typedef vector<int> VI;
typedef long long LL;
typedef vector<VI> VVI;
typedef vector<LL> VLL;
typedef vector<double> VD;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef vector<PII> VPII;
#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
#define MP make_pair
#define PF push_front
long long sum,a,mini,ile;
int n;
int main()
{
mini=10000000000LL;
scanf("%d", &n);
REP(i,n)
{
scanf("%lld", &a);
if(a%2==1)
{
mini=min(mini,a);
ile++;
}
sum+=a;
}
if(ile%2==1)
{
sum-=mini;
}
if(sum==0)
{
printf("NIESTETY\n");
return 0;
}
printf("%lld\n",sum);
return 0;
}