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#include <cstdio>
using namespace std;

int main() {
	int n;
	scanf("%d", &n);
	
	int w = 0;
	int mn = 1000000000;
	
	for(int i = 0; i < n; i++) {
		int c;
		scanf("%d", &c);
		w += c;
		
		if(c & 1 && c < mn) 
			mn = c;				
	}
	if(w & 1) 
		w -= mn; 
	if(w == 0)
		printf("NIESTETY");
	else
		printf("%d", w);
	
	return 0;
}