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#include <cstdio>
#include <cstring>
#include <cmath>
#include <cassert>
#include <iostream>
#include <algorithm>
#include <iterator>
#include <string>
#include <vector>
#include <queue>
#include <bitset>
#include <utility>
#include <stack>

using namespace std;
typedef long long LL;
typedef pair<int,int> PII;
typedef vector<int> VI;
#define MP make_pair
#define FOR(v,p,k) for(auto v=(p);v<=(k);++v)
#define FORD(v,p,k) for(auto v=(p);v>=(k);--v)
#define REP(i,n) for(auto i=0;i<(n);++i)
#define VAR(v,i) __typeof(i) v=(i)
#define FOREACH(i,c) for(VAR(i,(c).begin());i!=(c).end();++i)
#define PB push_back
#define ST first
#define ND second
#define SIZE(x) (int)x.size()
#define ALL(c) c.begin(),c.end()

#define ODD(x) ((x)%2)
#define EVEN(x) (!(ODD(x)))

int main() {
  ios_base::sync_with_stdio(0);

  int n, sum{}, a;
  cin >> n;

  int min2[2] = {1002, 1001};
  REP(i, n) {
    cin >> a;
    int &r = min2[a%2];
    r = min(r, a);
    sum += a;
  }
  if (sum%2 == 0) {
  cout << sum;
  } else if (n > 1) {
    cout << sum - min2[1];
  } else {
    cout << "NIESTETY";
  }
  cout << endl;

  return 0;
}