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//Piotr Pusz
#include<iostream>
#include<cstdio>
#include<algorithm>
#include<vector>

using namespace std;

int n, suma, niep, x;

int main()
{
    ios_base::sync_with_stdio(0);
    niep=999999999;
    cin>>n;

    for (int i=0; i<n; ++i)
    {
        cin>>x;
        if (x%2==1 && x<niep) niep=x;
        suma+=x;
    }

    if (suma%2==0) cout<<suma;
    else if (n>1) cout<<(suma-niep);
    else cout<<"NIESTETY";


    return 0;
}