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/*Kacper Kielak*/
#include <cstdio>

int main()
{
	int notes;
	scanf("%d", &notes);
	
	int min = 1001;
	int sum = 0;
	int tempNote;
	for(int i=0; i<notes; i++)
	{
		scanf("%d", &tempNote);
		sum += tempNote;
		if(tempNote < min && tempNote%2 != 0)
			min = tempNote;
	}
	
	if(sum%2 == 0)
		printf("%d", sum);
	else
	{
		if(notes == 1)
			printf("NIESTETY");
		else
			printf("%d", (sum-min));
	}
		
	return 0;
}