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#include <cstdio>
#include <iostream>

using namespace std;

int main()
{
    long long n;
    scanf("%lld", &n);
    long long wyn = 0, temp = 1001, a;
    for(long long i = 0; i < n; ++i)
    {
        scanf("%lld", &a);
        wyn+=a;
        if((a%2==1)&&(a<temp))
        {
            temp = a;
        }
    }
    if(wyn%2==0)
    {
        printf("%lld", wyn);
    }
    else if(n>1)
    {
        long long b = wyn-temp;
        printf("%lld", b);
    }
    else
    {
        cout << "NIESTETY";
    }

    return 0;
}