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#include <cstdio>
using namespace std;

typedef unsigned long long u64;
u64 sum, a, b, x;
bool ok = false;

int main()
{
    sum =0;
    a = 0;
    b = 0;
    int n;
    scanf("%d", &n);
    for(int i=0; i<n; ++i)
    {
        scanf("%llu", &x);
        if(x&1)
        {
            if(0 == a) {
                a = x;
            }
            else if(0 == b) {
                if(x > a) {
                    b = a;
                    a = x;
                } else {
                    b = x;
                }
            } else {
                if(x >= b) {
                    sum += x+a;
                    a = b;
                    ok = true;
                } else {
                    sum += a + b;
                    a = x;
                }
                b = 0;
                ok = true;
            }
        }
        else
        {
            sum += x;
            ok = true;
        }
    }

    if((a>0) && (b>0)) {
        sum += a+b;
        ok = true;
    }

    if(ok)
        printf("%llu\n", sum);
    else
        printf("NIESTETY\n");
    return 0;
}