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#include <iostream>
#include <vector>
 
using namespace std;
 
int tab[1000000];
 
int main(int argc, char** argv)
{
	int a=0;
	cin>>a;
	
	vector<int> elements;
	
	for(int i=0; i<a ;++i)
	{
		cin>>tab[i];
		elements.push_back(tab[i]);
	}
 
	unsigned int suma = 0;
	
	for(int j=0; j<elements.size(); ++j)
	{
		suma = suma + elements[j];
	}
	
	int max = 0;
	int min = 0;
	
	if(suma%2 != 0)
	{
		for(int k=0; k<elements.size(); ++k)
		{
			max = elements[k];
			
			if(k==0)
			{
				min = elements[0];
			}
			
			if((min>max) && (max%2 != 0))
			{
				min = max;
			}
			
		}
		
		if((suma-min)%2 != 0)
		{
			for(int k=0; k<elements.size(); ++k)
			{
				max = elements[k];
				
				if(k==0)
				{
					min = elements[elements.size()-1];
				}
				
				if((min>max) && (max%2 != 0))
				{
					min = max;
				}
				
			}
		}
		
		if((suma-min) == 0)
		{
			cout<<"NIESTETY"<<endl;
			return 0;
		}
		
		cout<<suma-min<<endl;	
	}
	else
	
	if(suma%2 == 0)
	{
		cout<<suma<<endl;
	}
	
	else
	{
		cout<<"NIESTETY"<<endl;
	}
	return 0;
 
}