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#include <stdint.h>
#include <cstdio>

int main(void) {
	int64_t sum, tmp;
	int64_t a, n;
	
	tmp = 1000000;
	sum = 0;

	scanf("%lld", &n);
	for(int64_t i = 0; i < n; ++i) {
		scanf("%lld", &a);
		sum += a;

		if(a % 2 && a < tmp)
			tmp = a;
	}

	if(n == 1 && sum % 2) {
		printf("NIESTETY\n");
		return 0;
	}

	if(sum % 2) sum -= tmp;

	printf("%lld\n", sum);
	return 0;
}