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#include <stdio.h>
using namespace std;

const int INF = 1000000001;
int main() {
    int n, sum = 0, minOdd = INF;
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        int a;
        scanf("%d", &a);
        sum += a;
        if (a % 2 == 1 && a < minOdd)
            minOdd = a;
    }
    
    if (sum % 2 == 1 && minOdd < INF)
        sum -= minOdd;
    
    if (sum % 2 == 1 || sum == 0)
        printf("NIESTETY\n");
    else
        printf("%d\n", sum);
    return 0;
}