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#include <iostream>
#include <limits.h>
using namespace std;
long long i,n,x,m=LLONG_MAX,s=0;
int main()
{
cin >> n;
for (i=1;i<=n;++i)
{
cin >> x;
s+=x;
if (x % 2 == 1 && x < m) m=x;
}
if (n==1 && s%2==1)
cout << "NIESTETY" <<endl;
else
{
if (s%2==1) s-=m;
cout << s << endl;
}
return 0;
}