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// Michal Raczkowski
#include <cstdio>

int main() {
    int count = 0, sum = 0, nominal = 0, least_odd = 10000001;

    scanf("%d", &count);
    while (count--) {
        scanf("%d", &nominal);
        sum += nominal;
        if (nominal % 2 && nominal < least_odd) {
            least_odd = nominal;
        }
    }
    if (sum % 2) {
        sum -= least_odd;
    }

    if (sum == 0) {
        printf("NIESTETY\n");
    } else {
        printf("%d\n", sum);
    }
    return 0;
}