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#include <cstdio>
#include <cstdint>

using namespace std;



int main() {
    int N;
    scanf("%d", &N);
    uint64_t sum = 0, min_odd = 0;
    for (int i = 0; i < N; ++i) {
        int tmp;
        scanf("%d", &tmp);
        sum += tmp;
        if ((tmp & 1) && (min_odd == 0 || tmp < min_odd)) {
            min_odd = tmp;
        }
    }
    sum -= sum & 1 ? min_odd : 0;
    if (sum == 0) {
        printf("NIESTETY\n");
    } else {
        printf("%llu\n", sum);
    }
}