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#include <stdio.h>
#include <stdlib.h>
#include <stdio.h>
int main(){
	int a,n,i,sum=0,min=1001,sump=0,sumn=0,np=0;
	scanf("%d",&n);
	for(i=0;i<n;i++){
		scanf("%d",&a);
		if(a%2==0)
			sump+=a;
		else {
			sumn+=a;
			np++;
			if(a<min)
				min=a;
		}
	}
	if(np%2==1){
		sumn-=min;
	}
	sum=sump+sumn;
	if(sum>0)
		printf("%d\n",sum);
	else
		printf("NIESTETY\n");

	return 0;
}