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#include <iostream>
using namespace std;

int banknoty[10000001];

int main()
{
    ios_base::sync_with_stdio(0);
    int n;
    cin>>n;

    int min_odd_number=9999998;
    long long suma=0;

    for(int i=0;i<n;i++)
    {
        cin>>banknoty[i];
        suma+=banknoty[i];
    }

    if(suma%2==0)
    {
        cout<<suma;
    }
    else
    {
        for(int i=0;i<n;i++)
        {
            if(banknoty[i]%2)
            {
                if(banknoty[i]<min_odd_number)
                    min_odd_number=banknoty[i];
            }
        }
        suma-=min_odd_number;
        if(suma%2 || suma==0)
            cout<<"NIESTETY";
        else
            cout<<suma;
    }

    return 0;
}