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#include <iostream>


 int main()
 {
 long long unsigned int n, v, sum=0, smalestOdd=1001;
    
    std::cin >> n;
    for (long long unsigned int i=0; i<n; i++)
    {
        std::cin >> v;
        sum+=v;
        if ((v%2) && (smalestOdd > v)) smalestOdd=v;
    }

    if (! (sum%2))
    {
        std::cout << sum << std::endl;
    }
    else
    {
	sum-=smalestOdd;
	if (sum > 0)
	    std::cout << sum << std::endl;
	else
	    std::cout << "NIESTETY" << std::endl;
    }	
 return 0;
 }