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#include <cstdio>

using namespace std;

int main() {
    int n;
    long long s=0,mn_np=1e18;
    scanf( "%d",&n );
    while ( n-- ) {
        int a;
        scanf("%d",&a);
        s+=a;
        if ( mn_np > a && a&1 )
            mn_np=a;
    }
    if ( (s&1) )
        s -= mn_np;
    if ( !s ) printf("NIESTETY\n");
       else printf("%lld\n",s);
    return 0;
}