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#include <stdio.h>
#include <stdlib.h>

int n;
int l=0;
long long sum=0L,a;
long long minniep=10000L;

main() {
scanf("%d",&n);
while(n--) {
scanf("%Ld",&a);
sum+=a;
if(a%2L==1L){
    l++;
    if(a<minniep) {
	minniep=a;
    }
}
}
if(l%2==1) {
    sum-=minniep;
}
if(sum>0L) {
    printf("%Ld\n",sum);
} else {
    printf("NIESTETY\n");
}
return 0;
}