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#include <cstdio>
using namespace std;
#define REP(x,n) for(int x = 0; x < n; x++)

int main(){
	int n, a;
	int sum = 0, least = 0;
	int even = 0;
	scanf("%d", &n);
	REP(x, n){
		scanf("%d", &a);
		sum += a;
		if (a % 2 == 1){
			even = (even + 1) % 2;
			if (a < least || least == 0)
				least = a;
		}
	}
	if (even == 1)
		sum -= least;
	if (sum == 0)
		printf("NIESTETY\n");
	else
		printf("%d\n", sum);
	return 0;
}