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#include <iostream>

using namespace std;

int main()
{
    int a,b;
    int bank = 1000;
    int suma = 0;
    cin>>a;
    if(a>=2)
{
        for(int i = 1; i <= a; i++)
    {
        cin>>b;
        suma = suma + b;
        if(bank > b && b%2==1)
        {
            bank = b;
        }
    }
    if(suma%2==0)
    {
        cout<<suma;
    }
    else
    {
        suma = suma - bank;
        cout<<suma;
    }
}
    else if(a == 1)
    {
        cin>>b;
        if(b%2==1)
            cout<<"NIESTETY";
        else
            cout<<b;
    }

}