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#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,mini=10000,sum=0,x;
	scanf("%d", &n);
	if(n == 1)
	{
		scanf("%d", &sum);
		if(sum%2==0) printf("%d\n", sum);
		else printf("NIESTETY\n");
	}
	else 
	{
		for(int i=0;i<n;i++)
		{
			scanf("%d", &x);
			sum+=x;
			if(x%2==1 && x<mini)
				mini = x;
		}
		if(sum%2==0)
			printf("%d\n", sum);
		else
			printf("%d\n", sum-mini);
	}
	return 0;
}