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//
//  Created by Kamil Borzym on 28/09/15.
//  Copyright © 2015 kam800. All rights reserved.
//

#include "stdio.h"

// (1 ≤ n ≤ 1 000 000)
// (1 ≤ ai ≤ 1000)

int main() {
    long n;
    scanf("%ld\n", &n);

    long sum = 0;
    long minimalOdd = 0;

    while (n>0) {
        long nextBill;
        scanf("%ld", &nextBill);

        if ((nextBill & 0x01) > 0) {
            if (nextBill < minimalOdd || minimalOdd == 0) {
                minimalOdd = nextBill;
            }
        }
        sum += nextBill;
        --n;
    }
    if ((sum & 0x01) > 0) {
        sum -= minimalOdd;
    }
    if (sum == 0) {
        printf("NIESTETY\n");
    } else {
        printf("%ld\n", sum);
    }

    return 0;
}