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#include <bits/stdc++.h>
using namespace std;

int main()
{
	int N;
	scanf("%d",&N);
	int a,e = 1e9;
	int sum = 0;
	for (int i = 0;i < N;i++)
	{
		scanf("%d",&a);
		sum += a;
		if (a&1)
			e = min(a,e);
	}
	if (sum%2 == 0)
	{
		printf("%d",sum);
	}
	else
	{
		if (sum-e == 0)
			printf("NIESTETY");
		else
			printf("%d",sum-e);
	}
	
	return 0;
}