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#include <iostream>
#include <algorithm>

typedef long long ll;

using namespace std;

ll sum = 0;
const ll inf = 1e9;

int main()
{
    ios_base::sync_with_stdio(0);
    
    ll n;
    cin>>n;
    
    ll najm = inf;
    
    while(n--)
    {
        ll nom;
        cin>>nom;
        
        if(nom % 2 == 1)
            najm = min(najm, nom);
        
        sum += nom;
    }
    
    if(sum % 2 == 1)
        sum -= najm;
    
    if(sum == 0)
        cout<<"NIESTETY\n";
    else
        cout<<sum<<"\n";
    
    
    return 0;
}