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#include <iostream>
#include <cstdio>

using namespace std;

int main() {
	int n, a, minNP = 1010;
	long long int answ = 0;
	
	scanf("%d", &n);
	while(n--) {
		scanf("%d", &a);
		if(a%2 && minNP > a)
			minNP = a;
		answ += a;
	}
	if(answ % 2) {
		answ -= minNP;
	}
	if(answ == 0)
		printf("NIESTETY\n");
	else
		printf("%lld\n", answ); 
	
	return 0;
}