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#include<iostream>
using namespace std;
int main(){
	long long b,n,suma=0,a=100000000000000000;
	cin>>n;
	for(int x=0;x<n;x++){
	cin>>b;
	suma+=b;
	if(b<a&&b%2==1)a=b;
} 
	if(suma%2==1)suma=suma-a;
	if(suma==0)cout<<"NIESTETY";
	else cout<<suma;
	return 0;
}