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#include <cstdio>
#include <vector>

#define MAX_N 1000000

int n;
int a, suma;
int min_nparz;

int main() {
	scanf("%d", &n);
	min_nparz = 1000;
	suma = 0;
	for (int i = 0; i < n; i++) {
		scanf("%d", &a);
		suma += a;

		if (a % 2 == 1 && a < min_nparz)
			min_nparz = a;
    }
	
	if (n == 1 && suma % 2 == 1) {
		printf("NIESTETY\n");
		return 0;
	}

	suma = (suma % 2) ? suma - min_nparz : suma;

	printf("%d\n", suma);	
	
	return 0;
}