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#include<iostream>
using namespace std;
int main()
{
    int a, b, sumcia1, sumcia2, min, y, op;
    int T [1006];
    cin >> a;
    y=0;
    min=10000;
    for (int i=0; i<a; i++)
  	{
  		cin >> T[i];
  	}
  	int k;
  	k=0;
  	b=0;
  	for (int j=0; j<a; j++)
	{
  		k+= T[j];
  		b++;
	}	
  	if (b==1)
  	{
  		if (k%2==0)
  		cout << k << endl;
  		else
  		cout << "NIESTETY" << endl;
	}
	else
	{
		if (k%2==0)
  		{
  			sumcia1= k;
  			cout << sumcia1;
		}
		else
		{
			for (int z=0;z<=b;z++)
			{
					if (T[z]%2!=0)
					{
						if(min>T[z])
							min=T[z];	
					}			
			}
			sumcia2=k-min;
			cout<<sumcia2 << endl;
		}
	}

  	  
    return 0;
}