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#include <stdio.h>
#include <vector>
#include <stack>
#include <cstdlib>
#include <algorithm>
#include <cmath>

#define ULL64 unsigned long long int

using namespace std;


int main()
{
	int n;
	int a;
	int minOdd = 0;
	int sum = 0;

	
	scanf("%i",&n);
	for(int i = 0;i<n;i++)
	{
		scanf("%i",&a);

		if(a%2!=0)
			minOdd = minOdd==0 ? a:min(minOdd,a);

		sum+=a;
	}

	if(sum%2!=0)
		sum-=minOdd;

	if(sum>0)
		printf("%i\n",sum);
	else
		printf("NIESTETY\n");

	return 0;
}