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#include <stdio.h>
#define INF 0x7fffffff

int main(void)
{
    int n, s = 0, a, minOdd = INF;

    scanf("%d", &n);

    while (n--)
    {
        scanf("%d", &a);
        s += a;
        minOdd = (a&1 && a < minOdd) ? a : minOdd;
    }

    if (minOdd == s){
        printf("NIESTETY\n");
    }
    else{
        minOdd = (minOdd == INF || ~s&1) ? 0 : minOdd;
        printf("%d\n",s-minOdd);
    }

    return 0;
}