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#include <iostream>
using namespace std;
long long int a, c, n, e, sum, naj=100000000000;
int main () {
cin>>n;
for (int i=0; i<n; i++ ){
	cin>>a;
	sum=sum+a;
	if (a<=naj && a%2==1) naj=a;	
}	
	if (sum%2==0){
		cout<<sum;
	}
	else if (sum==naj) cout<<"NIESTETY";
	else cout<<sum-naj;
return 0;	
}