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#include <iostream>

int main() {
    std::ios_base::sync_with_stdio(false);
    int n = 0;
    long long int minOddValue = 1001, current = 0, sum = 0;
    std::cin >> n;
    for (int i = 0; i < n; ++i) {
        std::cin >> current;
        if (current & 1 && current < minOddValue) {
            minOddValue = current;
        }
        sum += current;
    }
    if (sum & 1) {
        sum -= minOddValue;
    }
    if (sum > 0) {
        std::cout << sum;
    } else {
        std::cout << "NIESTETY";
    }
}