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#include<bits/stdc++.h>
using namespace std;
int main() {
	int m = -1;
	int s = 0;
	int n;
	scanf("%d", &n);
	while(n--) {
		int a;
		scanf("%d", &a);
		s += a;
		if(a % 2) if(m == -1 || a < m) m = a;
	}
	if(s % 2 == 0) printf("%d\n", s);
	else if(m != -1 && m != s) printf("%d\n", s - m);
	else puts("NIESTETY");
	return 0;
}