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#include <iostream>
#include <math.h>

using namespace std;


int main() {
	
	int n = 0, a =0, min = 1001;
	long long suma = 0;
	cin >> n;
	
	for (int i=0; i< n; i++){
	cin >> a;
	suma = suma +a;
	if(a % 2 != 0){
		if(min > a){
			min = a;
		}else{
			min = min;
		}
	}
}
	if (suma % 2 == 0){
		cout << suma;
	}else if((suma-min)> 0){
		cout << suma - min;
	}else {
		
		cout << "NIESTETY";
	}
	
	return 0;
}