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#include<iostream>
using namespace std;
long long int a,b,c=1001,d,wyn;

int main(){
	cin>>a;
	for(int i=0;i<a;i++){
		cin>>b;
	if(b%2==1){
		d=(d+1)%2;
	if(b<c)c=b;}
	wyn=wyn+b;
	
	}	
	if(d==0)cout<<wyn;
	if(d==1){
		wyn=wyn-c;
		if(wyn==0)cout<<"NIESTETY";
		else cout<<wyn;
	}
	return 0;
}