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#include <iostream>

int main()
{
    int amount = 0;
    std::cin >> amount;
    int smallestOdd = 1001;
    int bigSum = 0;
    int itWasOdd = 0;
    for(int i=0; i<amount; i++)
    {
        int number = 0;
        std::cin >> number;
        if(number < smallestOdd && number%2 != 0)
        {
            bigSum += smallestOdd;
            smallestOdd = number;
            itWasOdd = 1;
        }
        else
        {
            bigSum += number;
        }
    }

    bigSum -= itWasOdd*1001;
    
    if(bigSum%2 == 0 && bigSum != 0)
    {
        std::cout << bigSum << std::endl;
    }
    else if(itWasOdd && bigSum != 0)
    {
        bigSum += smallestOdd;
        std::cout << bigSum << std::endl;
    }
    else
    {
        std::cout << "NIESTETY" << std::endl;
    }
    return 0;
}