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#include <stdio.h>

int main()
{
    int n;
    int a;
    int sum = 0;
    int min_odd = 1000001;
    int result;


    scanf("%d", &n);

    for(int i=0; i<n; i++)
    {
        scanf("%d", &a);
        sum += a;
        if(a%2==1 && a<min_odd) min_odd = a;
    }
    result = (sum %2 == 0) ? sum : sum - min_odd;

    if(result > 0)
        printf("%d\n", result);
    else
        printf("NIESTETY\n");
}