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#include <stdio.h>

int main()
{
        int n, i, a;
        int sum;
        int min;

        min = 1001;
        sum = 0;
        scanf("%d\n", &n);
        for(i = 0; i < n; ++i) {
                scanf("%d", &a);
                sum += a;
                if ((a % 2 == 1) && (a < min)) {
                        min = a;
                }
        }
        if (sum % 2 == 0) {
                printf("%d\n", sum);
        } else {
                if (n == 1) {
                        printf("NIESTETY\n");
                } else {
                        printf("%d\n", sum-min);
                }
        }
        return 0;
}