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#include <bits/stdc++.h>
using namespace std;

int main(void) {
    int n;
    scanf("%d", &n);

    if (n == 1) {
        int tmp;
        scanf("%d", &tmp);
        if (tmp % 2) puts("NIESTETY");
        else printf("%d\n", tmp);
        return 0;
    }

    int res = 0;
    int MIN = 1e9+7;
    while (n--) {
        int tmp;
        scanf("%d", &tmp);
        if (tmp % 2) MIN = min(MIN, tmp);
        res += tmp;
    }

    if (res % 2) res -= MIN;

    printf("%d\n", res);

    return 0;
}