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// Potyczki1.cpp : Defines the entry point for the console application.
//
#include <stdio.h>
#include <climits>

int main()
{
	int n; 

	scanf("%d", &n);

	int *a = new int[n];

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

	int countOdd = 0;
	int countEven = 0;

	for (int i = 0; i < n; i++)
	{
		if (a[i] % 2 == 1)
		{
			countOdd++;
		}
		else
		{
			countEven++;
		}
	}

	int *odd = new int[countOdd];
	int *even = new int[countEven];

	countOdd = 0;
	int sumOdd = 0;
	int sumEven = 0;
	int minOdd = 1001;

	for (int i = 0; i < n; i++)
	{
		if (a[i] % 2 == 1)
		{
			odd[countOdd] = a[i];
			countOdd++;
			sumOdd += a[i];
			if (a[i] < minOdd)
			{
				minOdd = a[i];
			}
		}
		else
		{
			sumEven += a[i];
		}
	}

	if (countOdd % 2 == 1)
	{
		sumOdd -= minOdd;
	}

	if (countEven == 0 && countOdd < 2)
	{
		printf("NIESTETY\n");
	}
	else
	{
		printf("%d\n", sumEven + sumOdd);
	}

	return 0;
}