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#include <bits/stdc++.h>

using namespace std;

//typedef long long LL;

int main(){
	int n, ai, kie = 0, min1 = 1000000001;
	cin >> n;
	if (n == 1){
		cin >> ai;
		if (ai & 1)
			cout << "NIESTETY\n";
		else
			cout << ai << endl;
		return 0;
		}

	while (n--){
		cin >> ai;
		if ((ai & 1) && ai < min1 ) min1 = ai;
		kie += ai;
	}
	if (kie & 1) kie -= min1;
	cout << kie << endl;
}