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#include <iostream>
#include <vector>
#include <algorithm>
#include <stack>
using namespace std;

typedef long long ll;

#define poka(x) cerr << #x << " = " << x << endl;

int main(){
	ios_base::sync_with_stdio(0);	
	int n, minnp = 1009, s = 0;;
	cin >> n;
	for(int i = 0; i < n; ++i){
		int a;
		cin >> a;
		s += a;
		if(a % 2) minnp = min(a, minnp);
	}
	if(s % 2 == 0) cout << s << "\n";
	else if(s - minnp > 0) cout << s - minnp << "\n";
	else cout << "NIESTETY\n";
}