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#include <cstdio>
#include <cstring>

int main() {
	int n, k, min = 100000, suma = 0, parz = 0;
	scanf("%d", &n);
	for (int i = 0; i < n; i++) {
		scanf("%d", &k);
		suma += k;
		if ((k & 1) == 1) {
			parz += 1;
			if (k < min) {
				min = k;
			}
		}
		if ((k & 1) == 0) {
			parz += 2;
		}
	}
	if (parz < 2) {
		printf("NIESTETY");
	} else {
		if (suma & 1 == 1) {
			suma -= min;
		}
		printf("%d", suma);
	}
	return 0;
}