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#include <cstdio>

int main(){
	int n;
	scanf("%d",&n);
	int min_odd=1e9;
	int sum=0;
	for(int i=0;i<n;i++){
		int a;
		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(sum!=min_odd){
		printf("%d\n",sum-min_odd);
	}
	else{
		printf("NIESTETY\n");
	}
}