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#include <iostream>
#include <cstdio>
#include <algorithm>

using namespace std;

int n, x;
int mn = 1111;
long suma;

int main()
{
    cin >> n;
    for(int i = 0; i < n; i++)
    {
        cin >> x;
        suma += x;
        if(x%2) mn = min(mn, x);
    }
    if(suma%2 == 0) cout << suma;
    else
    {
        if(!(suma - mn)) cout << "NIESTETY";
        else cout << suma - mn;
    }

    return 0;
}