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#include <stdio.h>

int main(void)
{
    int i, n, min, sum, x;

    scanf("%d", &n);
    sum = 0;
    min = 1001;
    for (i = 0; i < n; ++i)
    {
        scanf("%d", &x);
        sum += x;
        if ((x & 0x00000001) && (x < min))
        {
            min = x;
        }
    }

    if (!(sum & 0x00000001))
    {
        printf("%d\n", sum);
    }
    else if ((min < 1000) && (sum > min))
    {
        printf("%d\n", sum - min);
    }
    else
    {
        printf("NIESTETY\n");
    }
    return 0;
}