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#include <cstdio>

int main() {
    int n, k, minOdd = 1000002, suma = 0;
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &k);
        if (k % 2 == 1 && k < minOdd)
            minOdd = k;
        suma += k;
    }
    if (suma % 2 == 0) {
        printf("%d", suma);
        return 0;
    }
    if (minOdd == suma) {
        printf("NIESTETY");
        return 0;
    }
    printf("%d\n", suma - minOdd);
}