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#include <stdio.h>
#include <stdlib.h>

int main() {
        long int n,m,s,t;
        scanf("%ld\n", &n);
        m = s = 0;
        while (n--) {
                scanf("%ld", &t);
                if ( ((t % 2) == 1) && (m == 0 || m > t) ) {
                        m = t;
                }
                s += t;
        }
        if ((s % 2) == 1) {
                s -= m;
        }

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