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#include <iostream>
#include <stdio.h>
/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main() {
	
	int n;
	scanf("%d",&n);
	
	int min=100000000;
	long long sum=0;
	int ile=0;
	int x;
	for(int i=0;i<n;i++){
		scanf("%d",&x);
		if(x%2==0){
			sum+=x;
		}else{
			ile++;
			sum+=x;
			if(x<min)min=x;
			
		}
		
		
	}
	
	if(ile%2!=0)sum-=min;
	
	if(sum!=0){
		printf("%lld\n",sum);
	}else{
		printf("NIESTETY\n");
	}
	return 0;
}