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#include <iostream>
using namespace std;

int main () {
    ios_base::sync_with_stdio (false);
	int n; cin>>n;
	int nieparzyste = 0;
	int najniep = 1001;
	int input;
	int res = 0;
	if (n == 1) {
		cin>>input;
		if (input%2 == 0)
			cout<<input;
		else 
			cout<<"NIESTETY";
	}
	else {
		for (int i = 0; i < n; ++i) {
			cin>>input;
			res += input;
			if (input%2 != 0) {
				nieparzyste++;
				if (input < najniep) {
					najniep = input;
				}
			}
		}
		if (nieparzyste%2 == 0) {
			cout<<res;
		}
		else {
			cout<<res-najniep;
		}
	}
	cin.get(),cin.get();
	return 0;
}