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#include <iostream>
#include <cstdio>
using namespace std;

int main() {
	int n, sum = 0, min_odd = 10001, a;
	scanf("%d", &n);
	for(int i = 0; i < n; ++i) {
		scanf("%d", &a);
		sum += a;
		if(a % 2 == 1 && a < min_odd) {
			min_odd = a;
		}
	}
	
	if(sum % 2 == 0) {
		printf("%d\n", sum);
	} else if(min_odd != 10001 && sum > min_odd) {
		sum -= min_odd;
		printf("%d\n", sum);
	}
	else {
		printf("NIESTETY\n");
	}
	return 0;
}