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#include <iostream>
#include <cstdio>

using namespace std;

#define NONE_ODD 2000;

int main() {
    ios_base::sync_with_stdio(0);
    long n;
    long sum = 0;
    long a;
    long minOdd = NONE_ODD;

    scanf("%ld", &n);
    while (n--) {
        scanf("%ld", &a);


        sum += a;

        if (a % 2 == 0) {
            continue;
        }

        if (a < minOdd) {
            minOdd = a;
        }
    }

    if (sum % 2 == 1) {
        sum -= minOdd;
    }

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