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#include<iostream>
#include<cstdio>
using namespace std;
int t, suma, mini, a;
int main()
{
	scanf("%d", &t);
	suma=0;
	mini=1001;
	for(int p=0; p<t; p++)
	{
		scanf("%d", &a);
		suma+=a;
		if(a%2==1)mini=min(mini, a);
	}
	if(suma%2==0)printf("%d\n", suma);
	else 
	{
		suma-=mini;
		if(suma==0)printf("NIESTETY\n");
		else printf("%d\n", suma);
	}
	return 0;
}