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#include<stdio.h>

int main()
{
    long lb;
    scanf("%ld", &lb);
    int min = 1001;
    long sum = 0;
    long i = 0;
    for(i = 0; i < lb; i++)
    {
        int num;
        scanf("%d", &num);
        if(((num % 2) == 1) && (num < min))
            min = num;
        sum += num;
    }
    if((sum % 2) == 0)
        printf("%ld\n", sum);
    else
    {
        sum -= min;
        if(sum == 0)
            printf("NIESTETY\n");
        else
            printf("%ld\n", sum);
    }
    return 0;
}