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#include<cstdio>

int main() {
    const long long INF = 1001;
    long long n, sum = 0, x, minimum = INF;
    scanf("%lld", &n);
    while (--n) {
        scanf("%lld", &x);
        if (x < minimum && x % 2 == 1) {
            if (minimum < INF)
                sum += minimum;
            minimum = x;
        }
        else
            sum += x;            
    }
    if (sum == 0)
        printf("NIESTETY\n");
    else {
        if (sum % 2 == 1)
            sum += minimum;
        printf("%lld\n", sum);
    }
}