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#include <cstdio>
#include <algorithm>

#define INF 1001

int n, a, min_np, sum;

int main () {
    min_np = INF;

    scanf("%d", &n);
    while (n--) {
        scanf("%d", &a);

        if (a%2 == 1)
            min_np = std::min(min_np, a);

        sum += a;
    }

    if (sum%2 == 0) {
        printf("%d\n", sum);

    } else if (min_np != INF && sum - min_np > 0) {
        printf("%d\n", sum - min_np);

    } else {
        printf("NIESTETY\n");
    }
}