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#include <iostream>
#include <cmath>
#include <cstdio>
#include <string>
#include <vector>
    #include <algorithm>
    #include<fstream>
    #include <ctime>
    using namespace std;
    
int main()
{
	ios_base::sync_with_stdio(0);
	int t;
	vector<int>tab;
	int pom;
	unsigned long long int delta=9999999999999999999;
	unsigned long long int suma=0;
	cin>>t;
	for(int i=0;i<t;i++)
	{
		cin>>pom;
		tab.push_back(pom);
		suma+=pom;
	}
	
	if(t==1&&tab.at(0)%2==1){cout<<"NIESTETY";}else{
	
	if(suma%2==0){cout<<suma;}
	else
	{
			for(int i=0;i<t;i++)
	{
		if(tab.at(i)%2==1&&tab.at(i)<delta)
		{
			delta=tab.at(i);
		}
	}
	cout<<suma-delta;
	}
}
return 0;
}