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#include <bits/stdc++.h>

int main()
{
    int n;
    scanf("%d", &n);
    int low = 1000000007;
    int sum = 0;
    for (int i = 0; i < n; ++i) {
        int x;
        scanf("%d", &x);
        if (x % 2 == 0)
            sum += x;
        else {
            if (low > x) {
                low = x;

            }
            sum += x;
        }
    }
    if (sum % 2 == 1)
        sum -= low;
    if (sum == 0)
        printf("NIESTETY\n");
    else
        printf("%d\n", sum);
}