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#include <cstdio>
#include <cstdint>
using namespace std;

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

    int32_t sum = 0;
    int minOdd = -1;
    for (int i = 0; i < n; i++) {
        int a;
        scanf("%d", &a);

        sum += a;
        if (a % 2 != 0 && (minOdd == -1 || a < minOdd)) {
            minOdd = a;
        }
    }

    if (sum % 2 == 0) {
        printf("%d", sum);
    } else if (minOdd != -1 && (sum - minOdd) > 0) {
        printf("%d", (sum - minOdd));
    } else {
        printf("NIESTETY");
    }

    return 0;
}