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#include<cstdio>

int main() {
    int n, a;
    int sum = 0;
    int min_odd = 2000;

    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;
    }

    if (sum % 2 == 0)
        printf("%d\n", sum);
    else if (sum - min_odd > 0)
        printf("%d\n", sum - min_odd); 
    else
        printf("NIESTETY\n");

    return 0;
}