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#include<cstdio>
#include<iostream>

long long int a, sum, N, mini = 1000000009;
bool b;

int main()
{
	scanf("%lld",&N);
	for(int i = 0; i < N; ++ i)
	{
		scanf("%lld",&a);
		sum += a;
		if(a%2==1)
		{
			mini=std::min(mini,a);
		}
	}
	if (sum%2==1) sum -= mini;
	if(sum>0) printf("%lld",sum);
	else printf("NIESTETY");
}