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#include <stdio.h>
int main ()
{
	int banknoty = 0;
	scanf("%d", &banknoty);
	int tmp = 0;
	int suma = 0;
	int min = 0;
	for (int i = 0; banknoty > i; i++)
	{
		scanf("%d", &tmp);
		suma = suma + tmp;
		if (tmp%2 == 1) 
		{
			if (min == 0)
				min = tmp;
			else if (min > tmp)
				min = tmp;
		}
	}	
	if (suma%2 == 0)
		printf("%d \n", suma);
	else
	{
		suma = suma - min;
		if (suma != 0)
			printf("%d \n", suma);
		else 
			printf("NIESTETY \n");
	}
	return 0;
}