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#include <bits/stdc++.h>

using namespace std;

int main() {
	
	int n;
	scanf("%d", &n);
	int result = 0, min_np = 1005, np = 0;
	for(int i=1; i<=n; ++i){
		int a;
		scanf("%d", &a);
		result+=a;
		if(a%2 == 1){
			np++;
			min_np = min(min_np, a);
		}
	}
	
	if(np%2 == 1)
		result-=min_np;
	
	if(result == 0)
		puts("NIESTETY");
	else
		printf("%d\n", result);
	
	return 0;
}