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#include <iostream>
#include <algorithm>
using namespace std;

long long b, sum, nparz, minn, i, j;

int main()
{
ios_base::sync_with_stdio(0);

cin >> b;
sum = 0;
nparz = 0;
minn = 1001;

for (i = 0; i < b; i++)
{
	cin >> j;
	sum = sum + j;
	if (j % 2 == 1)
	{
		nparz++;
		if (j < minn) minn = j;
	};	
};

if (nparz % 2 == 1) sum = sum - minn;

if (sum == 0) cout << "NIESTETY";
else cout << sum; 

return 0;
}