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#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    unsigned int n, a, min_n = 1001;
    unsigned long long int suma = 0;

    scanf("%u", &n);

    while(n--)
    {
        scanf("%u", &a);

        suma += a;
        if((min_n > a)&&(a % 2 != 0))
        {
            min_n = a;
        }
    }

    if(suma % 2)
    {
        suma -= min_n;
    }

    if(suma)
    {
        printf("%llu", suma);
    }
    else
    {
        printf("NIESTETY");
    }

    return 0;
}