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//
//  main.c
//  Test
//
//  Created by Bartłomiej Patrzyk on 20.09.2015.
//  Copyright © 2015 VimLabs. All rights reserved.
//

#include <stdio.h>

int main(int argc, const char * argv[]) {
    int n, i, a, sum = 0, isSumEven = 1, smallestOdd = 0, isSmallestOddSet = 0;
    
    scanf("%d", &n);
    
    for (i = 0; i < n; i++) {
        scanf("%d", &a);
        if (a % 2 == 0) {
            sum += a;
        } else {
            if (isSmallestOddSet) {
                if (a < smallestOdd) {
                    smallestOdd = a;
                }
            } else {
                isSmallestOddSet = 1;
                smallestOdd = a;
            }
            sum += a;
            isSumEven++;
            isSumEven %= 2;
        }
    }
    
    if (!isSumEven) {
        sum -= smallestOdd;
    }
    
    if (sum > 0) {
        printf("%d\n", sum);
    } else {
        printf("NIESTETY\n");
    }

    return 0;
}