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#include <cstdio>

using namespace std;


int sn = 1001;
int n, x;
long long int sum;

int main(){
	scanf("%d", &n);
	for(int i = 0; i < n; ++i){
		scanf("%d", &x);
		if(x % 2 == 1 and x < sn) sn = x;
		sum += x;
	}
	if(sum % 2 == 0) printf("%d\n", sum);
	else{
		sum -= sn;
		if(sum == 0) printf("NIESTETY");
		else printf("%d\n", sum);
	}
	return 0;
}