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#include <cstdio>

using namespace std;

const int infinity = 1001;

int main()
{
    int n;
    scanf("%d", &n);
    
    int min = infinity;
    int sum = 0;
    for (int i = 0; i < n; i++)
    {
        int a;
        scanf("%d", &a);
        
        sum += a;
        
        if (a % 2 == 1 && a < min)
            min = a;
    }
    
    if (sum % 2 == 1)
        sum -= min;
        
    if (sum > 0)
        printf("%d\n", sum);
    else
        printf("NIESTETY\n");
    
    return 0;    
}