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#include <stdio.h>

int main() {
	int n, suma = 0, minOdd = 1001;
	int *money;
	//WCZYTYWANIE I PRZYSTOSOWYWANIE
	scanf("%d", &n);
	money = new int[n];
	
	for (int i = 0; i < n; i++)
	{
		scanf("%d", &money[i]);
	}
	
	//OBLICZENIA
	for (int p = 0; p < n; p++)
	{
		suma += money[p];
		if (money[p] % 2 != 0)
		{
			if (money[p] < minOdd)
			{
				minOdd = money[p];
			}
		}
	}
	//WYNIKI
	if (suma % 2 != 0)
	{
		if (n > 1)
		{
			suma = suma - minOdd;
			printf("%d", suma);
		}
		else
		{
			printf("NIESTETY");
		}
	}
	else
	{
		printf("%d", suma);
	}

	return 0;
}