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#include <iostream>
using namespace std;
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char** argv) {
	int n, suma = 0, min = 999, x;
	cin>>n;
	for(int i = 0; i < n; i++)
	{
		cin>>x;
		suma += x;
		if(min > x)
			if(x%2 == 1)min = x;

		
	}
	if(suma%2 == 0)
	{	
		cout<<suma;
	}
	else if(n != 1)
	cout<<suma - min;
	else cout<<"NIESTETY";
	
	return 0;
}