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#include <cstdio>
#include <cstdint>

int32_t main() {
    int32_t total_notes /* n */,
            total_sum = 0,
            minimum_odd = INT32_MAX;
    scanf("%d", &total_notes); // read n
    for (int32_t i = 0; i < total_notes; i++) {
        int32_t note /* a_i */;
        scanf("%d", &note); // read a_i
        total_sum += note;
        if (note % 2 == 1 && note < minimum_odd) {
            minimum_odd = note;
        }
    }
    if (total_sum % 2 == 0) {
        printf("%d\n", total_sum);
    } else if (total_sum - minimum_odd == 0) {
        printf("NIESTETY\n");
    } else {
        printf("%d\n", total_sum - minimum_odd); 
    }
    return 0;
}