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#include <cstdio>

int main() {
    int suma =0 , minNP = 1000005, iloscNP = 0, n, a;
    scanf(" %d",&n);
    for(int i=0; i<n; i++) {
        scanf(" %d",&a);
        if(a%2 == 1){
            if( minNP > a)
                minNP = a;
            iloscNP ++;
        }
        suma += a;
    }
    if((n==1) && (iloscNP==1)) {
        printf("NIESTETY\n");
        return 0;
    } else {
        if(iloscNP%2==1)
            suma -= minNP;
    }
    printf("%d\n",suma);
    return 0;
}