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#include <iostream>
using namespace std;
int a[1001];
int main(){
	int n,b;
	long long s = 0;
	cin>>n;
	for(int i =0;i<n;i++){
		cin>>b;
		s+=b;
		a[b]++;
	}
	if(s%2==0)
		cout<<s<<"\n";
	else{
		int ok = 0;
		for(int j=1;j<1000;j+=2)
			if(a[j]>0 && s-j>0){
				cout<<s-j<<"\n";
				ok =1;
				break;
			}
			
		if(ok==0){
			cout<<"NIESTETY\n";
		}
	}
	return 0;
}