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

int main()
{
	int n;
	ll s = 0;
	int minn = 1000000;
	int tmp;
	scanf("%d", &n);
	while(--n)
	{
		scanf("%d", &tmp);
		s += tmp;
		if(tmp % 2 == 1 && tmp < minn)
			minn = tmp;
	}
	if(s % 2 == 1)
		s -= minn;
	if(s == 0)
		puts("NIESTETY");
	else
		printf("%lld\n", s);
		
	return 0;
}